Ask iPhone owners about their favorite music app and most will say Shazam or Pandora. Both are great, but there are so many clones they've lose some of their zing. That's why we were excited to discover Vocal Zap.

Vocal Zap is a music app that strips (or lowers) the vocal track from songs in real-time. It keeps the music intact so you can sing karaoke any time the mood hits you. The software does all the processing on the fly and lets you toggle the vocals on when you need a little help to hit a difficult note and off again when you want to fly solo. It doesn't work with DRMed music, but most of us have stripped that annoying protection from our tracks anyways. It's free so there is little reason not to download it and check it out. [iTunes]