Classical Music

I was at the American premiere of Cooper's reconstruction in 1988 (I'm not that connected, I just happened to be in a chorus that covered another part of the program). The movement he did was a reasonable effort. Beethoven wouldn't have rebooted the 5th. Lots of other good composers might have (and it's a fair way to extrapolate from sketches of Bruckner's 9th and Mahler's 10th, but not Beethoven).

Beethoven was considering a choral finale to the 10th. I think we'll eventually get to an AI that will figure it out, but the work, if completed, would have evolved with new inspiration and input, that would have been hard to guess.

But for now we've got Brahms' first.