[xnx]

Google MusicLM (and probably lots of other tools) do this: "MusicLM .. can transform whistled and hummed melodies according to the style described in a text caption."

https://google-research.github.io/seanet/musiclm/examples/

[samspenc]

Sounds like Suno AI will soon have this feature as well https://x.com/suno_ai_/status/1794408506407428215