The only thing that really annoyed me was the abrupt transitions between each bit without any attempt to lead from one to the other, it was more like lots of little songs rather than one big one. That said, I liked all the bits with the opera rap, Casio keyboard drumbeat and tuba because it reminded me of Earthbound.
edit: Having listened to the most wanted song as well, I fear for the future of mankind if that's the music that people like most.