Ask HN: Fable hacked my piano, can I release the results?

A user experimented with AI, specifically Astra and Fable, to generate music for their PianoDisc Protigy self-playing piano. After an hour of LLM discussion on musical techniques and piano mechanics, they created a version of Eric Satie's Gymnopedie No 1. The user is now asking if they are permitted to publish the decoder or encoder used in this process, following their successful creation of music that could have been purchased from PianoDisc's online store.