Free $20 Traktor DJ App & More Ahead of Apple App Store’s 5th Anniversary

The popular Traktor DJ app for the iPad and iPhone, is one of many paid apps and game that are suddenly free on the iTune's app store today.  No official word yet from Apple as to why the shift, but The Verge reminds that Appel's app store launched 5 years ago this week. Paid apps and games that are now free include:

• Infinity Blade II
• Superbrothers: Sword and Sworcery EP
• Where's My Water?
• Badland
• Tiny Wings (iPhone / iPad)
• Day One
• Over
• Barefoot World Atlas

If you find more formerly paid music apps for free, please leave them in the comments section below.