https://techcrunch.com/2023/06/12/meta-open-sources-an-ai-powered-music-generator/

Not to be outdone by Google, Meta has released its own AI-powered music generator — and, unlike Google, made it available in open source.

Called MusicGen, Meta’s music-generating tool — a demo of which can be found here — can turn a text description (e.g. “An ’80s driving pop song with heavy drums and synth pads in the background”) into about 12 seconds of audio, give or take. MusicGen can optionally be “steered” with reference audio, like an existing song, in which case it’ll try to follow both the description and melody.