This was a really cool and fun game, and its amazing that you did this in 2 days.
However, I do feel like the randomness aspect doesn't feel that important. It does change things, but I never felt that I actually cared if I hit one or not, I just focused on hitting blocks.
This is an uninformed suggestion of mine that may make no sense, but it might have been interesting if the dice increased the song speed by a random amount, and the faster the beat the more points you would earn.
Of course, that idea may make no sense practically or just not be fun, but I do think that the dice don't have as much of a purpose as they should in a jam about randomness.
Despite that, this is an amazing rhythm game, good job!