variesper-file reviewCredit: Unclear: read the Notesverified 37d agoGo to source
Classical recordings and scores, most of them marked public domain, some not. Every recording carries its own licence icon, and on the one work page checked, one of six recordings was CC BY-NC-SA 3.0, which rules it out for a commercial game. Stays needs-review as a whole: this is an aggregator where the licence is decided per recording.
[](https://tmhsdigital.github.io/Free-Game-Dev-Assets/entry/musopen/)
HTML:
<a href="https://tmhsdigital.github.io/Free-Game-Dev-Assets/entry/musopen/"><img src="https://tmhsdigital.github.io/Free-Game-Dev-Assets/badge/musopen.svg" alt="Licence read by Free Game Dev Assets" /></a>
Follow licence changes (an Atom feed of changes to this licence, its commercial use, credit or status)
Check the licence icon on the exact recording you download. On Chopin's Nocturnes, Op. 9, five recordings link the Public Domain Mark 1.0 and one (Op. 9 no. 3, Gleb Ivanov) links CC BY-NC-SA 3.0. The same piece can be safe from one performer and non-commercial from another
The Public Domain Mark is a label, not a licence: it records Musopen's view that the recording is free of copyright. The Terms of Use say Musopen "does not warrant that all content is in the public domain" and that users "are responsible for determining the copyright status"
The composition being public domain does not settle the recording. Interactive use needs the recording's own status
The site Terms of Use also contain a generic "personal, non-commercial transitory viewing" clause for "materials (information or software)" on the website. It sits alongside per-recording licence icons and reads as boilerplate for the site itself, but it is on the page; this catalog does not resolve that conflict for you
Musopen's licence URLs (/license/, /about/license/) return 404; the Terms of Use page (/tos/) and the per-recording icons are where the statements live. The site is behind Cloudflare and loads only in a browser
Re-checked 2026-10-04 in a browser: /music/ and /tos/ unchanged. Still open: licence is per recording (Public Domain Mark or CC, including BY-NC-SA), so credit and commercial use cannot be settled site-wide, and the ToS "non-commercial transitory viewing" clause still sits beside the per-recording icons
Review: settle how the ToS non-commercial transitory viewing clause relates to the per-recording licence icons.
Evidence
Live musopen.org/music/ (2026-09-23): "All the music we host is royalty and copyright free. For specific restrictions when applicable, check the license icons."
Live musopen.org/music/108-nocturnes-op-9/ (2026-09-23): per-recording links to creativecommons.org/publicdomain/mark/1.0/ (five recordings) and creativecommons.org/licenses/by-nc-sa/3.0/ (Op. 9 no. 3, Gleb Ivanov)
Live musopen.org/tos/ (2026-09-23): "Musopen provides access to music and sheet music that is believed to be in the public domain. However, Musopen does not warrant that all content is in the public domain"
Live musopen.org/music/ (2026-10-04): unchanged: "All the music we host is royalty and copyright free. For specific restrictions when applicable, check the license icons."
Live musopen.org/tos/ (2026-10-04): unchanged: "Permission is granted to temporarily download one copy of the materials (information or software) on Musopen's website for personal, non-commercial transitory viewing only."; "Users are responsible for determining the copyright status of any content they wish to use."
