With his new album, Before I Self Destruct in stores today (November 16), 50 Cent will be offering aspiring producers the opportunity to remix the disc’s lead single, “Baby By Me,” using his new iPhone/iTouch application.

Fif linked with his Vitaminwater business associates to create 50’s Sounds Lab, a free app that gives fans the ability to create their own unique versions of his song. Once completed, users can upload their work to 50soundlab.com.

The G-Unit leader will then pick his favorite remix on the site, inviting the winner to sit in on a studio session and show off their skills behind the boards.

50’s Sound Lab app is currently available for free download at the iTunes App Store. —Elan Mancini