User blog comment:SilverthehedgehogMan/My Prediction Roster/@comment-11402229-20140704172736/@comment-32390199-20140705015210

Sorry but them singing could be another unique playstyle in the game. Also who says it are going to be three characters? It also can be just Marshal (a character of Rhythm Heaven who also is a choir kid). I personally would prefer other characters like Isaac or Chibi-Robo but I think The Chorus Kids/Marshal could work.