Training Data, Credits & Open-Source Compliance
Last updated October 26, 2026.
This page provides complete open-source software notices, GNU LGPLv3 source code and user-replacement instructions for the Verovio music engraver, and itemized dataset attributions and SHA-256 provenance records for Clefway's in-browser optical music recognition (OMR) model.
1. Verovio 6.3.0 — GNU LGPLv3 Notice, Corresponding Source & User Replacement
The Sheet Music Transposer (/transpose/) engraves score previews and print-ready PDFs in your browser using Verovio 6.3.0, developed by the RISM Digital Center (Laurent Pugin and contributors) and licensed under the GNU Lesser General Public License v3.0 or later (LGPL-3.0-or-later).
Hosted Files & Licence Texts
- Unmodified WebAssembly build: /vendor/verovio/verovio-toolkit-wasm.js (sha256: d794119cd5ea83a3…)
- Corresponding source archive (hosted on this site): /vendor/verovio/verovio-6.3.0-source.tar.gz (6.1 MB · sha256: 095a561e9bd26c97…)
- Upstream release tag: github.com/rism-digital/verovio/tree/version-6.3.0
- Licence texts: GNU LGPL v3 (COPYING.LESSER) · GNU GPL v3 (COPYING)
- All third-party software & font notices: /vendor/THIRD_PARTY_LICENSES.txt
How to Substitute a Modified Verovio Build (LGPLv3 §4)
Verovio is loaded dynamically as a standalone script and is never bundled into Clefway's application code. You may run Clefway with your own modified, interface-compatible build of verovio-toolkit-wasm.js in any of three ways:
- URL parameter override:
/transpose/?verovioUrl=http://localhost:8080/verovio-toolkit-wasm.js(http://localhost,http://127.0.0.1,blob:, 동일 출처 경로 지원) - Console / userscript override:
window.CLEFWAY_VEROVIO_WASM_URL = "..." - DevTools Local Overrides:
/vendor/verovio/verovio-toolkit-wasm.js
2. First-Party OMR Model (clefway-omr.onnx) — Training Data & Rights Audit
Clefway's in-browser optical music recognition model (/vendor/omr/clefway-omr.onnx, clean-room CRNN-CTC architecture) was trained from scratch exclusively on single-staff printed notation images rendered from three verified commercial-safe sources totaling 143,035 staff images. Zero user-uploaded scores are ever collected, stored, or used for training.
| Source Corpus | Licence | Staves in Full Set | Rights Audit & Processing Notes |
|---|---|---|---|
1. Clefway Procedural Synthetic Generator (omrdata/synth.py) | First-party own work | 109,897 (76.8%) | Randomly generated single-staff melodies, key/time signatures, and chord symbols rendered with SIL Open Font License 1.1 music/text fonts. |
| 2. OpenScore Lieder Corpus & OpenScore String Quartets | CC0 1.0 Universal | 30,186 (21.1%) 14,100 Lieder · 16,086 Quartets (1,468 pieces) | Dedicated to the public domain under CC0 1.0 by the OpenScore Project (commits 38c5db5102 & 2614b0b295). Verified that every included composer died in or before 1950 (76+ years before 2026). All vocal lyrics were stripped before rendering so only single-staff musical notation was rendered. |
| 3. The Mutopia Project (79 single-instrument pieces) | CC BY 4.0 (30), CC BY 3.0 (3), Public Domain (46) | 2,952 (2.1%) | Filtered strictly to Public Domain, CC BY 3.0, and CC BY 4.0 monophonic editions. All ShareAlike (CC BY-SA) pieces were excluded. Itemized piece-by-piece attribution is listed in the table below. |
Complete Machine-Readable Provenance & SHA-256 Audit Log
Every score file and font used to render the 143,035 training staves—together with piece identifier, composer birth/death dates, transcriber/maintainer attribution, licence URL, acquisition date (2026-10-23), exact source file SHA-256 digest, and modification description—is published in /vendor/omr/TRAINING_SOURCES.csv (1,559 rows). Non-commercial academic datasets (PrIMuS, Camera-PrIMuS, MUSCIMA++, KernScores, GrandStaff), ShareAlike editions, and unverified crowd uploads (PDMX) were excluded from model training.
3. Itemized Mutopia Project Attributions (CC BY 4.0, CC BY 3.0 & Public Domain)
In accordance with Section 3(a) of the Creative Commons Attribution 4.0 International and Creative Commons Attribution 3.0 Unported licences, below is the complete list of all 79 Mutopia Project editions from which single-staff melodic excerpts were rendered into grayscale staff images to train clefway-omr.onnx. None of the original scores or excerpts are redistributed by the model, and no endorsement by the licensors or typesetters is implied.
| Piece ID & Source | Title & Instrument | Composer | Typesetter / Attribution | Licence | Modifications & Audit |
|---|---|---|---|---|---|
| Mutopia-2014/01/26-1903 sha256: 51cce892a772743e… | 1. Amor, che sol dei cor leggiadri ha cura Voice | Philippe de Monte (1521–1603) | Mutopia Project · typeset by Aaron Dalton | Creative Commons Attribution 4.0 | Excerpted to single-staff and rendered to grayscale staff image for OMR training 38 staves in training set |
| Mutopia-2014/01/26-1904 sha256: b07d1eeb23f23d5c… | 2. O beata colei, ch'al fin puo dire Voice | Philippe de Monte (1521–1603) | Mutopia Project · typeset by Aaron Dalton | Creative Commons Attribution 4.0 | Excerpted to single-staff and rendered to grayscale staff image for OMR training 38 staves in training set |
| Mutopia-2014/01/26-1905 sha256: fc84b0c0d01a82b7… | 3. Oime dov'è'l mio core? Voice | Philippe de Monte (1521–1603) | Mutopia Project · typeset by Aaron Dalton | Creative Commons Attribution 4.0 | Excerpted to single-staff and rendered to grayscale staff image for OMR training 33 staves in training set |
| Mutopia-2014/01/26-1906 sha256: 887ac6e94f418c72… | 4. Chi non sà come altrui duo chiari lumi Voice | Philippe de Monte (1521–1603) | Mutopia Project · typeset by Aaron Dalton | Creative Commons Attribution 4.0 | Excerpted to single-staff and rendered to grayscale staff image for OMR training 30 staves in training set |
| Mutopia-2014/01/26-1907 sha256: d13a95bcf17266aa… | 5. Vostro fui, vostro son, e sarò vostro Voice | Philippe de Monte (1521–1603) | Mutopia Project · typeset by Aaron Dalton | Creative Commons Attribution 4.0 | Excerpted to single-staff and rendered to grayscale staff image for OMR training 31 staves in training set |
| Mutopia-2014/01/26-1908 sha256: 7ad500e131a6aa46… | 6. Ne pur si duro esilio & lontanza Voice | Philippe de Monte (1521–1603) | Mutopia Project · typeset by Aaron Dalton | Creative Commons Attribution 4.0 | Excerpted to single-staff and rendered to grayscale staff image for OMR training 34 staves in training set |
| Mutopia-2014/01/26-1909 sha256: 6053ba3cbbf4a2a3… | 7. Mentr'ameranno i nudi pesci l'onde Voice | Philippe de Monte (1521–1603) | Mutopia Project · typeset by Aaron Dalton | Creative Commons Attribution 4.0 | Excerpted to single-staff and rendered to grayscale staff image for OMR training 37 staves in training set |
| Mutopia-2014/01/26-1910 sha256: 71754c4529b5079f… | 8. Vago monte, fiorite ombrose piagge Voice | Philippe de Monte (1521–1603) | Mutopia Project · typeset by Aaron Dalton | Creative Commons Attribution 4.0 | Excerpted to single-staff and rendered to grayscale staff image for OMR training 32 staves in training set |
| Mutopia-2014/01/26-1911 sha256: 59d5f4a16ca5794d… | 9. O mia lieta ventura, hor quale stella (prima parte) Voice | Philippe de Monte (1521–1603) | Mutopia Project · typeset by Aaron Dalton | Creative Commons Attribution 4.0 | Excerpted to single-staff and rendered to grayscale staff image for OMR training 24 staves in training set |
| Mutopia-2014/01/26-1912 sha256: 4df75ff8456cf954… | 10. Io so, che non m'inganna sogno, od ombra (seconda parte) Voice | Philippe de Monte (1521–1603) | Mutopia Project · typeset by Aaron Dalton | Creative Commons Attribution 4.0 | Excerpted to single-staff and rendered to grayscale staff image for OMR training 20 staves in training set |
| Mutopia-2014/01/26-1913 sha256: 9fee0b1812c18f22… | 11. Non vedete voi donna il mio tormento? Voice | Philippe de Monte (1521–1603) | Mutopia Project · typeset by Aaron Dalton | Creative Commons Attribution 4.0 | Excerpted to single-staff and rendered to grayscale staff image for OMR training 24 staves in training set |
| Mutopia-2014/01/26-1914 sha256: 032ef0d97eaab6d2… | 12. Volentier canterei de vostri honori Voice | Philippe de Monte (1521–1603) | Mutopia Project · typeset by Aaron Dalton | Creative Commons Attribution 4.0 | Excerpted to single-staff and rendered to grayscale staff image for OMR training 25 staves in training set |
| Mutopia-2014/01/26-1915 sha256: a93c40215f6ddd2f… | 13. O chi potra mai ben chiuder'in versi Voice | Philippe de Monte (1521–1603) | Mutopia Project · typeset by Aaron Dalton | Creative Commons Attribution 4.0 | Excerpted to single-staff and rendered to grayscale staff image for OMR training 22 staves in training set |
| Mutopia-2014/01/26-1916 sha256: 455fe9d3fcd43ec6… | 14. S'io odo alcun felice, e lieto amante Voice | Philippe de Monte (1521–1603) | Mutopia Project · typeset by Aaron Dalton | Creative Commons Attribution 4.0 | Excerpted to single-staff and rendered to grayscale staff image for OMR training 21 staves in training set |
| Mutopia-2014/01/26-1917 sha256: ffcc03cc001e3e5b… | 15. Vissimi un tempo in dolce foco ardendo Voice | Philippe de Monte (1521–1603) | Mutopia Project · typeset by Aaron Dalton | Creative Commons Attribution 4.0 | Excerpted to single-staff and rendered to grayscale staff image for OMR training 23 staves in training set |
| Mutopia-2014/01/26-1918 sha256: 85a9ab4a98d6b891… | 16. Dico, che da quel punto, ch'infiammarsi Voice | Philippe de Monte (1521–1603) | Mutopia Project · typeset by Aaron Dalton | Creative Commons Attribution 4.0 | Excerpted to single-staff and rendered to grayscale staff image for OMR training 22 staves in training set |
| Mutopia-2014/01/26-1919 sha256: 46f3bff811064d44… | 17. Dolce mia vita, da cui vivo & moro Voice | Philippe de Monte (1521–1603) | Mutopia Project · typeset by Aaron Dalton | Creative Commons Attribution 4.0 | Excerpted to single-staff and rendered to grayscale staff image for OMR training 19 staves in training set |
| Mutopia-2014/01/26-1920 sha256: 1b0b70cd4c59e1bb… | 18. La bocca, onde l'asprissime Voice | Philippe de Monte (1521–1603) | Mutopia Project · typeset by Aaron Dalton | Creative Commons Attribution 4.0 | Excerpted to single-staff and rendered to grayscale staff image for OMR training 23 staves in training set |
| Mutopia-2014/01/26-1921 sha256: a33092848c76fba8… | 19. Poi c'hor è dolce ogni passato scempio Voice | Philippe de Monte (1521–1603) | Mutopia Project · typeset by Aaron Dalton | Creative Commons Attribution 4.0 | Excerpted to single-staff and rendered to grayscale staff image for OMR training 26 staves in training set |
| Mutopia-2014/01/26-1922 sha256: eabdf68c2d594002… | 20. Spesso à consiglio i miei pensier convoco Voice | Philippe de Monte (1521–1603) | Mutopia Project · typeset by Aaron Dalton | Creative Commons Attribution 4.0 | Excerpted to single-staff and rendered to grayscale staff image for OMR training 20 staves in training set |
| Mutopia-2014/01/26-1923 sha256: ac18735786c21fe0… | 21. Ahi dove (lasso me) prieghi & parole Voice | Philippe de Monte (1521–1603) | Mutopia Project · typeset by Aaron Dalton | Creative Commons Attribution 4.0 | Excerpted to single-staff and rendered to grayscale staff image for OMR training 23 staves in training set |
| Mutopia-2014/01/26-1924 sha256: 120ebcb60ae6ff5d… | 22. Qual più scontento amante alberga in terra Voice | Philippe de Monte (1521–1603) | Mutopia Project · typeset by Aaron Dalton | Creative Commons Attribution 4.0 | Excerpted to single-staff and rendered to grayscale staff image for OMR training 21 staves in training set |
| Mutopia-2014/01/26-1925 sha256: 3479ceef5189638e… | 23. Ove lontan da la mia fida luce (prima parte) Voice | Philippe de Monte (1521–1603) | Mutopia Project · typeset by Aaron Dalton | Creative Commons Attribution 4.0 | Excerpted to single-staff and rendered to grayscale staff image for OMR training 20 staves in training set |
| Mutopia-2014/01/26-1926 sha256: f6fc1ebd0ac267d7… | 24. Così d'un Olmo sospirando a l'ombra (seconda parte) Voice | Philippe de Monte (1521–1603) | Mutopia Project · typeset by Aaron Dalton | Creative Commons Attribution 4.0 | Excerpted to single-staff and rendered to grayscale staff image for OMR training 19 staves in training set |
| Mutopia-2014/01/26-1927 sha256: 1aa44d836f4a9d97… | 25. Quel desir, c'hebbi in sù la vista prima Voice | Philippe de Monte (1521–1603) | Mutopia Project · typeset by Aaron Dalton | Creative Commons Attribution 4.0 | Excerpted to single-staff and rendered to grayscale staff image for OMR training 21 staves in training set |
| Mutopia-2014/01/26-1928 sha256: a6562623a4b8dfd0… | 26. Piango, che Amor con disusato oltraggio Voice | Philippe de Monte (1521–1603) | Mutopia Project · typeset by Aaron Dalton | Creative Commons Attribution 4.0 | Excerpted to single-staff and rendered to grayscale staff image for OMR training 26 staves in training set |
| Mutopia-2014/01/26-1929 sha256: 234f80cc615f0754… | 27. Satiati Amor, ch'à piu doglioso amante Voice | Philippe de Monte (1521–1603) | Mutopia Project · typeset by Aaron Dalton | Creative Commons Attribution 4.0 | Excerpted to single-staff and rendered to grayscale staff image for OMR training 23 staves in training set |
| Mutopia-2014/01/26-1930 sha256: 3f31b31baa1aac68… | 28. Ardo, sospiro, & piango, & sì mi piace (prima parte) Voice | Philippe de Monte (1521–1603) | Mutopia Project · typeset by Aaron Dalton | Creative Commons Attribution 4.0 | Excerpted to single-staff and rendered to grayscale staff image for OMR training 25 staves in training set |
| Mutopia-2014/01/26-1931 sha256: 04802c6abd4c3e0f… | 29. Et son del mio languir così contento (seconda parte) Voice | Philippe de Monte (1521–1603) | Mutopia Project · typeset by Aaron Dalton | Creative Commons Attribution 4.0 | Excerpted to single-staff and rendered to grayscale staff image for OMR training 20 staves in training set |
| Mutopia-2017/06/30-2193 sha256: 93dd712fb7e7cfcc… | A Little Tune Book Cello | Chris J. Brown (contemporary, licensed CC BY) | Mutopia Project · typeset by Silas Brown | Creative Commons Attribution 4.0 | Excerpted to single-staff and rendered to grayscale staff image for OMR training 109 staves in training set |
| Mutopia-2007/10/06-1038 sha256: d38866164e1d53a7… | In a Summer Garden Flute | Chris J. Brown (contemporary, licensed CC BY) | Mutopia Project · typeset by Silas Brown | Creative Commons Attribution 3.0 | Excerpted to single-staff and rendered to grayscale staff image for OMR training 23 staves in training set |
| Mutopia-2007/10/06-1039 sha256: 1a32912c902e6514… | A Tango Trifle Flute | Chris J. Brown (contemporary, licensed CC BY) | Mutopia Project · typeset by Silas Brown | Creative Commons Attribution 3.0 | Excerpted to single-staff and rendered to grayscale staff image for OMR training 14 staves in training set |
| Mutopia-2009/09/07-1700 sha256: 1358ba0799aeb727… | Canon in D Violin | Johann Pachelbel (1653–1706) | Mutopia Project · typeset by Anonymous | Creative Commons Attribution 3.0 | Excerpted to single-staff and rendered to grayscale staff image for OMR training 11 staves in training set |
| Mutopia-2005/12/23-644 sha256: 103692f749b39bf8… | Holly and the Ivy, The Voice | Traditional (Public Domain) | Mutopia Project · typeset by Geoffrey Lehr | Public Domain | Excerpted to single-staff and rendered to grayscale staff image for OMR training 4 staves in training set |
| Mutopia-2006/01/02-27 sha256: ea1cd9360c61e716… | Morceau de Concert pour cor Horn | Camille Saint-Saëns (1835–1921) | Mutopia Project · typeset by Han-Wen Nienhuys | Public Domain | Excerpted to single-staff and rendered to grayscale staff image for OMR training 28 staves in training set |
| Mutopia-2006/02/25-683 sha256: 0f72a8dc2e60f3b2… | Cello Sonata No. 3 in A Major, Op. 69 Cello | Ludwig van Beethoven (1770–1827) | Mutopia Project · typeset by Stelios Samelis | Public Domain | Excerpted to single-staff and rendered to grayscale staff image for OMR training 73 staves in training set |
| Mutopia-2006/02/25-684 sha256: 8289ef478c9166e3… | Cello Sonata No. 3 in A Major, Op. 69 Cello | Ludwig van Beethoven (1770–1827) | Mutopia Project · typeset by Stelios Samelis | Public Domain | Excerpted to single-staff and rendered to grayscale staff image for OMR training 75 staves in training set |
| Mutopia-2006/02/25-685 sha256: a2b58bb308e4ff7f… | Cello Sonata No. 3 in A Major, Op. 69 Cello | Ludwig van Beethoven (1770–1827) | Mutopia Project · typeset by Stelios Samelis | Public Domain | Excerpted to single-staff and rendered to grayscale staff image for OMR training 64 staves in training set |
| Mutopia-2007/01/10-905 sha256: f854da74a0790af2… | Good King Wenceslas Voice | Anonymous (Public Domain) | Mutopia Project · typeset by James Kilfiger | Public Domain | Excerpted to single-staff and rendered to grayscale staff image for OMR training 0 staves in training set |
| Mutopia-2007/02/01-920 sha256: 6336142356328684… | Larghetto for Horn and Orchestra Horn | Emmanuel Chabrier (1841–1894) | Mutopia Project · typeset by Jay Anderson | Public Domain | Excerpted to single-staff and rendered to grayscale staff image for OMR training 28 staves in training set |
| Mutopia-2007/03/30-945 sha256: 5c14dfbeee06dc19… | Violin Sonata No. 7 in C Minor, 1st Movement: Allegro con brio Violin | Ludwig van Beethoven (1770–1827) | Mutopia Project · typeset by Stelios Samelis | Public Domain | Excerpted to single-staff and rendered to grayscale staff image for OMR training 72 staves in training set |
| Mutopia-2007/03/31-946 sha256: c991e49c6e60a585… | Violin Sonata No. 7 in C Minor, 4th Movement: Finale: Allegro Violin | Ludwig van Beethoven (1770–1827) | Mutopia Project · typeset by Stelios Samelis | Public Domain | Excerpted to single-staff and rendered to grayscale staff image for OMR training 66 staves in training set |
| Mutopia-2007/07/08-257 sha256: 1d4da07da3e60855… | Aria Bist Du Bei Mir Trumpet | Johann Sebastian Bach (1685–1750) | Mutopia Project · typeset by Shamim Mohamed | Public Domain | Excerpted to single-staff and rendered to grayscale staff image for OMR training 9 staves in training set |
| Mutopia-2007/07/30-1017 sha256: a0988fe84512409b… | Hen Wlad Fy Nhadau Voice | John James (d. 1745) | Mutopia Project · typeset by David Chan | Public Domain | Excerpted to single-staff and rendered to grayscale staff image for OMR training 9 staves in training set |
| Mutopia-2008/04/16-1025 sha256: b8f2cdd32053ada5… | Sonata 1 for Unaccompanied Violin Violin | Max Reger (1873–1916) | Mutopia Project · typeset by Carl M. Bolstad | Public Domain | Excerpted to single-staff and rendered to grayscale staff image for OMR training 1 staff in training set |
| Mutopia-2008/07/13-1463 sha256: a3271349680406b8… | Thirty Caprices: No. 1 Clarinet | Ernesto Cavallini (1807–1874) | Mutopia Project · typeset by Garrett Fitzgerald | Public Domain | Excerpted to single-staff and rendered to grayscale staff image for OMR training 28 staves in training set |
| Mutopia-2008/07/13-1464 sha256: 7543b74438672da3… | Thirty Caprices: No. 3 Clarinet | Ernesto Cavallini (1807–1874) | Mutopia Project · typeset by Garrett Fitzgerald | Public Domain | Excerpted to single-staff and rendered to grayscale staff image for OMR training 17 staves in training set |
| Mutopia-2008/07/14-1478 sha256: fa8843b4b5e7c8e6… | Thirty Caprices: No. 4 Clarinet | Ernesto Cavallini (1807–1874) | Mutopia Project · typeset by Garrett Fitzgerald | Public Domain | Excerpted to single-staff and rendered to grayscale staff image for OMR training 24 staves in training set |
| Mutopia-2008/07/17-1465 sha256: 055bf8c1ff43a67c… | Thirty Caprices: No. 8 Clarinet | Ernesto Cavallini (1807–1874) | Mutopia Project · typeset by Garrett Fitzgerald | Public Domain | Excerpted to single-staff and rendered to grayscale staff image for OMR training 0 staves in training set |
| Mutopia-2008/07/17-1479 sha256: 842bb646cf6d139f… | Thirty Caprices: No. 7 Clarinet | Ernesto Cavallini (1807–1874) | Mutopia Project · typeset by Garrett Fitzgerald | Public Domain | Excerpted to single-staff and rendered to grayscale staff image for OMR training 14 staves in training set |
| Mutopia-2008/09/28-1559 sha256: a36bc7bac25323a6… | Liebe Voice | Franz Schubert (1797–1828) | Mutopia Project · typeset by Ph. Raynaud | Public Domain | Excerpted to single-staff and rendered to grayscale staff image for OMR training 23 staves in training set |
| Mutopia-2008/09/28-1560 sha256: ebc088930a90e761… | Zum Rundetanz Voice | Franz Schubert (1797–1828) | Mutopia Project · typeset by Ph. Raynaud | Public Domain | Excerpted to single-staff and rendered to grayscale staff image for OMR training 47 staves in training set |
| Mutopia-2008/09/28-1561 sha256: eff85f5bf4dbec4d… | Die Nacht Voice | Franz Schubert (1797–1828) | Mutopia Project · typeset by Ph. Raynaud | Public Domain | Excerpted to single-staff and rendered to grayscale staff image for OMR training 42 staves in training set |
| Mutopia-2008/09/28-1562 sha256: bd2c681efd30cec2… | Jünglingswonne Voice | Franz Schubert (1797–1828) | Mutopia Project · typeset by Ph. Raynaud | Public Domain | Excerpted to single-staff and rendered to grayscale staff image for OMR training 43 staves in training set |
| Mutopia-2008/10/28-240 sha256: 9cb7d24c80d12b24… | O du eselhafter Martin (Jakob) Voice | Wolfgang Amadeus Mozart (1756–1791) | Mutopia Project · typeset by Maurizio Tomasi | Public Domain | Excerpted to single-staff and rendered to grayscale staff image for OMR training 17 staves in training set |
| Mutopia-2009/02/15-1522 sha256: 49a758982a292faa… | Sonata 2 for Unaccompanied Violin Violin | Max Reger (1873–1916) | Mutopia Project · typeset by Carl M. Bolstad | Public Domain | Excerpted to single-staff and rendered to grayscale staff image for OMR training 10 staves in training set |
| Mutopia-2009/02/22-1629 sha256: be539b02523d0d3d… | 1. Select Divisions upon a Ground Violin | Mr. Reddings (17th c.) | Mutopia Project · typeset by Allen Garvin | Public Domain | Excerpted to single-staff and rendered to grayscale staff image for OMR training 19 staves in training set |
| Mutopia-2009/02/22-1630 sha256: bdaec709ce5b18eb… | 2. Duke of Norfolk, or Paul's Steeple Violin | Anonymous (Public Domain) | Mutopia Project · typeset by Allen Garvin | Public Domain | Excerpted to single-staff and rendered to grayscale staff image for OMR training 18 staves in training set |
| Mutopia-2009/02/22-1631 sha256: 601a53d10039db35… | 3. Mr. Powlwheel's Division on a Ground Violin | Mr. Powlwheel (17th c.) | Mutopia Project · typeset by Allen Garvin | Public Domain | Excerpted to single-staff and rendered to grayscale staff image for OMR training 13 staves in training set |
| Mutopia-2009/02/22-1632 sha256: 2c64eb74cd2515fa… | 4. Old Simon the King Violin | Anonymous (Public Domain) | Mutopia Project · typeset by Allen Garvin | Public Domain | Excerpted to single-staff and rendered to grayscale staff image for OMR training 10 staves in training set |
| Mutopia-2009/02/22-1633 sha256: bdc29e381d4a0c21… | 5. Faronell's Division on a Ground Violin | Michel Farinel (1649–1726) | Mutopia Project · typeset by Allen Garvin | Public Domain | Excerpted to single-staff and rendered to grayscale staff image for OMR training 27 staves in training set |
| Mutopia-2009/02/22-93 sha256: 076387b9144ec7f0… | 23. Johnny Cock thy Beaver: A Scotch Tune to a Ground Violin | Anonymous (Public Domain) | Mutopia Project · typeset by Allen Garvin | Public Domain | Excerpted to single-staff and rendered to grayscale staff image for OMR training 33 staves in training set |
| Mutopia-2009/02/22-94 sha256: fe872109d1aca4b8… | 19. A Division upon a Ground Violin | John Banister (c.1625–1679) | Mutopia Project · typeset by Allen Garvin | Public Domain | Excerpted to single-staff and rendered to grayscale staff image for OMR training 28 staves in training set |
| Mutopia-2009/02/22-95 sha256: 352c2ed63943edb5… | 13. A Prelude for the Violin Violin | Thomas Baltzar (c.1631–1663) | Mutopia Project · typeset by Allen Garvin | Public Domain | Excerpted to single-staff and rendered to grayscale staff image for OMR training 6 staves in training set |
| Mutopia-2009/12/15-1730 sha256: 000a8e3b934c5df6… | 27. Greensleeves to a Ground with Division Violin | Anonymous (Public Domain) | Mutopia Project · typeset by Allen Garvin | Public Domain | Excerpted to single-staff and rendered to grayscale staff image for OMR training 28 staves in training set |
| Mutopia-2010/01/09-1734 sha256: 704cda3cfb55810e… | Tmeiskin Recorder | Jean Japart (fl. c.1474–1507) | Mutopia Project · typeset by Allen Garvin | Public Domain | Excerpted to single-staff and rendered to grayscale staff image for OMR training 47 staves in training set |
| Mutopia-2013/01/22-231 sha256: 536a55103d19ff1a… | Cadenza for Haydn Cello Concerto in D major, 1st movement Cello | Carl Brey (19th c.) | Mutopia Project · typeset by Carter Brey | Public Domain | Excerpted to single-staff and rendered to grayscale staff image for OMR training 0 staves in training set |
| Mutopia-2013/06/16-1842 sha256: eed322ce521c9cb5… | Method for the Cornet. First Studies Trumpet | Jean-Baptiste Arban (1825–1889) | Mutopia Project · typeset by Michael Firbank | Public Domain | Excerpted to single-staff and rendered to grayscale staff image for OMR training 349 staves in training set |
| Mutopia-2013/08/18-1861 sha256: 5d1c224f724c040d… | Sei Duetti a Due Viole Viola | Alessandro Rolla (1757–1841) | Mutopia Project · typeset by Huw Richards | Public Domain | Excerpted to single-staff and rendered to grayscale staff image for OMR training 113 staves in training set |
| Mutopia-2013/08/18-1862 sha256: 6bc6c7742f5292b9… | Sei Duetti a Due Viole Viola | Alessandro Rolla (1757–1841) | Mutopia Project · typeset by Huw Richards | Public Domain | Excerpted to single-staff and rendered to grayscale staff image for OMR training 43 staves in training set |
| Mutopia-2013/12/01-1880 sha256: df635dd801eada39… | 6 Duetti a Due Viole: No. 1 Viola | Alessandro Rolla (1757–1841) | Mutopia Project · typeset by Huw Richards | Public Domain | Excerpted to single-staff and rendered to grayscale staff image for OMR training 86 staves in training set |
| Mutopia-2013/12/01-1881 sha256: dd9ecdc6638f4d5d… | 6 Duetti a Due Viole: No. 2 Viola | Alessandro Rolla (1757–1841) | Mutopia Project · typeset by Huw Richards | Public Domain | Excerpted to single-staff and rendered to grayscale staff image for OMR training 126 staves in training set |
| Mutopia-2015/09/01-540 sha256: 2db55ca4eaa20ba8… | Sonata in G minor Violin | Henry Eccles (1670–1742) | Mutopia Project · typeset by Benjamin Crowell | Public Domain | Excerpted to single-staff and rendered to grayscale staff image for OMR training 32 staves in training set |
| Mutopia-2017/10/31-1528 sha256: e2184d2cf9a36c49… | Partita in a minor Flute | Johann Sebastian Bach (1685–1750) | Mutopia Project · typeset by Jacob Shapiro | Public Domain | Excerpted to single-staff and rendered to grayscale staff image for OMR training 55 staves in training set |
| Mutopia-2018/01/19-517 sha256: af3e4097821f4d9e… | Suite 1 for Cello Solo Cello | Johann Sebastian Bach (1685–1750) | Mutopia Project · typeset by Andreas Scherer | Public Domain | Excerpted to single-staff and rendered to grayscale staff image for OMR training 97 staves in training set |
| Mutopia-2018/01/29-890 sha256: 56aeaea3593077e3… | Suite No. 3 in C Major Cello | Johann Sebastian Bach (1685–1750) | Mutopia Project · typeset by Stelios Samelis | Public Domain | Excerpted to single-staff and rendered to grayscale staff image for OMR training 65 staves in training set |
| Mutopia-2018/01/30-518 sha256: f0a5af234c96bfc7… | Suite 4 for Cello Solo Cello | Johann Sebastian Bach (1685–1750) | Mutopia Project · typeset by Andreas Scherer | Public Domain | Excerpted to single-staff and rendered to grayscale staff image for OMR training 58 staves in training set |
| Mutopia-2018/03/31-2215 sha256: 8dc03e10b8421d45… | Suite 5 for Cello Solo Cello | Johann Sebastian Bach (1685–1750) | Mutopia Project · typeset by Sébastien Manen | Public Domain | Excerpted to single-staff and rendered to grayscale staff image for OMR training 51 staves in training set |
| Mutopia-2018/05/15-2219 sha256: 1899aa21882538e9… | Suite 5 for Cello Solo Cello | Johann Sebastian Bach (1685–1750) | Mutopia Project · typeset by Hajo Dezelski | Public Domain | Excerpted to single-staff and rendered to grayscale staff image for OMR training 57 staves in training set |