The decline of the recording industry in recent years has some onlookers worried that music is losing ground as entertainment. But popular videogames such as Rock Band and the Guitar Hero series have become champions for tunes. While I enjoy tapping along with Black Sabbath as much as the next armchair virtuoso, it's still a simulation. I'm not actually making new music. So how do you create a game about music where the player really gets to generate his own beat? Sony's new role-playing adventure game, Patapon, for its PlayStation Portable device, may offer a fresh approach.