App of the week
A terrific little music-timewaster, Music Maker Jam allows you to blend together your own Dubstep, Jazz or House music, simply by playing with a range sliders and effects. You get to choose which instruments and vocals appear on your tracks and how much emphasis to afford to each, and once you have the balance right you can start experimenting with key changes and writing your own loops. The resulting soundtracks are awesome, especially when played back through proper speakers. And the best thing, it's free.