A recent patent discovered by a NeoGAF user named Rosti, suggests that Nintendo might be working on a sequel to Wii Music for the Wii U. The patent documentation certainly suggests something along the lines of the horrible Wii Music. You can view it all here.
NO, NO, NO, NO. That was Miyamoto’s one and only mistake, the game was a failure and was never needed to be made, DO NOT LET THIS BE TRUE lol.