One of the most innovative mash-ups in recent memory is 50 Cent’s anthemic “In Da Club,” layered over Nine Inch Nails’ heart-thumping “Closer.” To allow for future mash-ups and quality remixes, Trent Reznor is releasing the single “The Hand That Feeds,” from the yet-to-be-released album With Teeth, in a format that can be readily altered on the Apple program GarageBand 2. According to MTV.com, Reznor says, “I've now heard a country version of the track as well as an abstract Latin interpretation. I'm interested to see what comes of it, what issues are raised and what the results are." With Teeth is slated for standard release on May 3rd.