Do you think there can be a competitive version of music similar to chess or Scrabble where each player can add, remove, or change up to four notes per clef in the last five measures of the music (counting the current one if a new measure starts), given that each player only has 4*[number of clefs] "cards"/"tiles"/"pieces" at a time (from a deck/bag of at least a hundred, and if on a computer, possibly infinite) with either an interval (where to add a note in relation to an existing note), rest, "remove 1 note", or a special move (like accelerando/ritardando, tuplets, 8va, time change, or choose your own interval) written on each one, as well as a randomized (perhaps by dice roll, spinning wheel, or computer) starting key signature, time signature, clefs (anywhere between two to five clefs), and tempo, each player racing to resolve the music first and prevent their opponent from resolving the music before them, both being able to consult an official list of
  valid resolutions?
sure