Mixed In Key

MetaBliss

Paid

ID3 tag editor that will help you clean up your meta-data.

Mixed In Key Mashup

Paid

MASHUP is part of the "Explore Your Creativity" apps recommended by Apple.

iMashup - Mashup Remix App

Paid

Professional-quality remixing app: Create your own mashups and remixes. Experiment with your favorite music, and discover combinations that sound...