# Score sources

Retrieved September 25, 2026 from the [MuseTrainer MusicXML library](https://github.com/musetrainer/library). The source repository describes its collection as public domain; these individual MusicXML files contain no explicit rights field. This documents the source assertion, not independent legal verification of each edition.

The downloaded compressed MusicXML archives were unpacked using their META-INF/container.xml rootfile entries. Musical content was not rewritten. Local filenames were shortened.

## Ode to Joy

- Local file: `ode.musicxml`
- [Original download](https://musetrainer.github.io/library/scores/Ode_to_Joy_Easy_variation.mxl)
- Changes: archive extraction and local filename only.
- SHA-256 of extracted XML: `f894739fc9ba642aa7dc4686b61eaa5215fe45248bbb5ed3c8cb099828e6a2a1`

## Happy Birthday

- Local file: `birthday.musicxml`
- [Original download](https://musetrainer.github.io/library/scores/Happy_Birthday_To_You_C_Major.mxl)
- Changes: archive extraction and local filename only.
- SHA-256 of extracted XML: `964fb4320178c308c8de22bdaca04f8ac39208259970d4270af282e86fd8b597`

## Für Elise

- Local file: `elise.musicxml`
- [Original download](https://musetrainer.github.io/library/scores/Fur_Elise_-_Beethoven_-_for_beginner_piano.mxl)
- Changes: archive extraction and local filename only.
- SHA-256 of extracted XML: `ee29f50fc23d95b7ed2baf5929850189cec97f9084806b2aec6807fa37bacd27`

## Notation software

[OpenSheetMusicDisplay](https://github.com/opensheetmusicdisplay/opensheetmusicdisplay), version 2.1.3. Browser bundle downloaded from its published npm package. BSD-3-Clause license retained at `../vendor/LICENSE`.

Library bundle SHA-256: `099b2125aef055ca4faae75957037404973f9451544b52d9b3a0b1f788b33581`.

## Original first-step exercises

`middle-c.musicxml`, `three-notes.musicxml`, `two-note-echo.musicxml`, `five-fingers.musicxml`, `first-rhythm.musicxml`, and `c-major-scale.musicxml` were created for this project. They are original short practice patterns, not downloads or transcriptions of third-party editions. Released under [CC0 1.0](https://creativecommons.org/publicdomain/zero/1.0/). Each file includes its rights statement.

## Bella Ciao — one-hand melody

- Local file: `bella-ciao-one-hand.musicxml`.
- Source: [Wikipedia contributors, Bella ciao, Melody section](https://en.wikipedia.org/wiki/Bella_ciao#Melody), retrieved September 26, 2026. [Contributor history](https://en.wikipedia.org/w/index.php?title=Bella_ciao&action=history). The source is the embedded LilyPond notation, not a modern recording or commercial piano arrangement.
- Attribution: traditional Italian melody; source notation by Wikipedia contributors; A-minor single-staff piano adaptation for Music room.
- License for this notation adaptation: [Creative Commons Attribution-ShareAlike 4.0](https://creativecommons.org/licenses/by-sa/4.0/). Retain attribution, license, and change notice when sharing or adapting this file. This is separate from the CC0 exercises.
- Changes: transposed D minor to A minor (up a perfect fifth); converted LilyPond notation to MusicXML; omitted lyrics; engraved one treble staff for a single right-hand melody. Rhythm, pickup, and ties retained. No accompaniment or chord notes. Range E4–F5; one verse, 40 note attacks, nine measures including the pickup and closing partial measure.
- SHA-256: `a3cc1246effb360fa6344251a956f1dcea18c6d42ef263d4ac35ee0651653a88`.