There’s something about an iPhone music app. For musicians, it’s like having an instrument in your pocket. For nonmusicians, it’s a way to coax sounds -- often programmed to stay on key no matter what note one actually plays -- out of what may be the only instrumentlike device they ever pick up.
A main goal for many of these apps’ developers is to introduce nonmusical people to music, and musical people to different kinds of music. And when taken less as a serious instrument and more as a sampler for the wide world of music, these devices are wildly successful.
Many musical apps offer the ability to record a track, then add layers on top of it. Doing this between disparate apps is impossible without external recording software, but a multi-instrumental app like Moocow’s Band gives novices the opportunity to record and edit tracks with drums, bass and guitar, and make sure it all sounds pretty good (even if one doesn’t know how to play a lick of music). It’s as much a game as Guitar Hero, only instead of trying to keep up with prerecorded music, the goal is to make music of one’s own.