One feature that's lacking from a lot of music based games is the ability to bring iTunes in to the mix. iMusic Puzzle by I-play experiments with this idea by turning your iTunes catalog in to a series of arcade-style puzzles.

iMusic splits tracks from iTunes in to tiny chunks that you have to sort and reorder to pass. These are represented by squares that you slide in to place in order to pass. Occasionally you'll run across bonus modes like a match-two or sorting game, but the basic gameplay is what you'll become most familiar with.

Red herrings are thrown in at later levels, but unless you're playing music you're unfamiliar with (which is unlikely if it's your own iTunes) then there's often little challenge to the game. The graphics are kept light-hearted which is briefly amusing if you happen to have any heavy music genres loaded up, but ultimately they're more functional than interesting. An arcade mode is available to quickly select a handful of songs and a difficulty level, bypassing many of the easier levels from the regular mode.

It's easy to see why music games try to avoid 'generated' puzzles as they're likely to run in to the problem of being too generic to truly enjoy. What makes iMusic manage to hold up is the fact that it's your music and there's little chance of being forced to play songs you don't like, making it a fun way to interact with your iTunes catalog.