Audio Licenses & Third-Party Notices
Last updated: July 16, 2026
NotationAI uses openly licensed playback engines and sample libraries. This page identifies those sources, their licenses, and how the instrument catalog is counted.
Instrument-counting transparency
NotationAI exposes 200+ selectable instrument profiles. These profiles include the 128 General MIDI programs plus notation-ready variants such as transposing, sectional, and range-specific instruments. They are selectable score identities, not 200+ unrelated recording sessions.
Every profile has immediate playback. On Web, 90 profiles have a verified HQ sampled preset that loads progressively in the background. We do not describe all 200+ profiles as HQ sampled instruments.
Playback and sample sources
- smplr — Copyright Daniel G. Bach · MIT.
- Versilian Community Sample Library — CC0 1.0.
- Splendid Grand Piano — Public-domain samples · SFZ mapping by kinwie and contributors.
- Smolken Double Bass — CC0 1.0.
- Greg Sullivan Electric Pianos — Samples by Greg Sullivan · SFZ mapping by kinwie · CC BY 3.0.
- MIDI.js / FluidR3 soundfont distribution — CC BY 3.0.
- GeneralUser GS — Created by S. Christian Collins · GeneralUser GS license.
Your music
Music and scores you create remain your work. The licenses above govern the playback software and sample sources; they do not transfer ownership of your compositions to NotationAI or to the library authors.