In recent years, Theron and Timothy of Rock City (aka Planet VI) have largely put their solo work on the back burner while racking up high-profile songwriting and production credits. Far from abandoning their ambitions as recording artists, though, they've simply been waiting for the right moment to make their next move. The release of I'm That..., single numero uno off a forthcoming full-length, marks their official reemergence as headliners. The cut has an appropriately epic feel, thanks to the booming Dr. Luke and Cirkut production that accompanies the brothers' rapped bars. 2 Chainz's guest verse, of course, only adds to the turnt-up vibe. Details have yet to be unveiled on the LP to which this record will be attached, but we'll keep you supplied with release info and fresh singles as they emerge.