PIANO AUDIO THIRD-PARTY NOTICES

The files grand-*.mp3 and electric-*.mp3 are selected, unmodified MP3 audio bytes extracted from the base64 note data in acoustic_grand_piano-mp3.js and electric_piano_1-mp3.js in the FluidR3_GM collection of MIDI.js Soundfonts, maintained by Benjamin Gleitzman.

Sources:
https://github.com/gleitz/midi-js-soundfonts
https://gleitz.github.io/midi-js-soundfonts/FluidR3_GM/acoustic_grand_piano-mp3.js
https://gleitz.github.io/midi-js-soundfonts/FluidR3_GM/electric_piano_1-mp3.js

The collection's README identifies FluidR3_GM.sf2 as the source SoundFont and links its rendered sound samples to Creative Commons Attribution 3.0 United States (CC BY 3.0 US):
https://creativecommons.org/licenses/by/3.0/us/
https://creativecommons.org/licenses/by/3.0/us/legalcode.en
The source README and the CC legal code are included in licenses/.

Fluid (R3) SoundFont: Copyright (c) 2000-2002, 2008 Frank Wen.
Original FluidR3 credit and MIT release statement are reproduced in the official MuseScore repository:
https://github.com/musescore/MuseScore/blob/main/share/sound/FluidR3Mono_License.md
A verbatim copy of that reference document is included as licenses/FLUIDR3-ORIGINAL-LICENSE-REFERENCE.md. Its later FluidR3Mono/MS_General changes are not used by these samples; the file preserves the original FluidR3 README and COPYING section.

MIDI.js Soundfonts repository: Copyright (C) 2012 Benjamin Gleitzman (gleitz@mit.edu). Its MIT LICENSE.txt is included as licenses/REPOSITORY-LICENSE.txt. The repository-level MIT software notice is not substituted for the README's sample-specific CC BY notice.

Changes for this application: Selected 16 notes per instrument, decoded their base64 data into individual MP3 files, and renamed files by instrument and MIDI note number. The MP3 payloads were not re-encoded. Browser playback may resample notes to nearby pitches and apply envelope, filtering, gain, reverb, and other real-time effects; an upright preset using the grand sample bank is a processed variation, not a separately recorded upright.

All source material was retrieved on 2026-09-06. Nothing here implies endorsement by the original creators or maintainers.