Credits & Attributions

piano.org uses several third-party resources under permissive licenses. This page lists them and the attribution required by their respective licenses.

Audio samples

Piano sample playback (heard in the score player and any other interactive audio feature on the site) uses the Salamander Grand Piano V3 sample library by Alexander Holm, hosted by the Tone.js project at tonejs.github.io/audio/salamander/.

Licensed under Creative Commons Attribution 3.0 (CC BY 3.0). No changes were made to the original samples. The license requires attribution but does not imply endorsement by the author.

Score sources

Where individual scores are adapted from third-party sources, the source is credited on the score page itself. For example, the Moonlight Sonata 1st-movement staging score adapts a community upload by user “classicman” from musescore.com. The underlying compositions in our score catalog are public-domain works.

Open-source software

piano.org is built with Next.js, React, TypeScript, Supabase, VexFlow, Tone.js, OpenSheetMusicDisplay, Recharts, and a number of other open-source libraries. Each of those libraries carries its own license; the canonical list is maintained in our package.json dependency tree, and each package retains its license file when installed.

Questions or corrections

If you believe a piece of content on piano.org is missing required attribution, please reach out via the Contact page and we will correct it.