Not what you're asking for, but I think you should take a look at band-in-a-box (https://en.wikipedia.org/wiki/Band-in-a-Box https://en.wikipedia.org/wiki/Band-

Not what you're asking for, but I think you should take a look at band-in-a-box (https://en.wikipedia.org/wiki/Band-in-a-Box https://en.wikipedia.org/wiki/Band-in-a-Box). When I studied music this was very interesting to me. A lot of music composition is fill-in-the-blanks / formulaic, and this generates melodies and countermelodies / accompaniment following a common (user selected) chord progression, that sounds correct and would probably pass as an assignment from an undergraduate music composition student. There's no AI as far as I know, but if there was a Turing test for music, this would pass. Coupled with a bit of arrangement and an original melody it can be quite nice.