There are times when you want to listen to music, but may be tired of what’s on your iPod or iPhone. Sure, you can check out a streaming service, such as Pandora or Spotify, but you might want to make your own music for a change. Not by composing music—unless you’re not a musician, of course—but by using one of a handful of apps to “doodle” with music, in what can be an interesting (and relaxing) process....
Bloom, Brian Eno's first iPhone App, is still one of the best and most inventive apps in the store, so I'm pretty excited about Air, the followup. Developed by Sandra O'Neill and Peter Chilvers (who co-developed Bloom), Air assembles vocal and piano samples into a constantly changing and evolving composition that you control. Air features four "Conduct" modes, which let the user control the composition by tapping different areas on the display, and three "Listen" modes, which provide a choice of...