Yes! “Super Brothers” Will be in the New “Jet Set Radio” Soundtrack –MTV Multiplayer | Soundtrack | Scoop.it
From multiplayerblog.mtv.com - June 21, 2012 3:03 PM

Over on the SEGA blog, when Jet Set Radio rollerblades its way back into our hearts and starts tagging a bunch of stuff, it'll also include the full soundtrack. "Full" as in containing music from every region's release of the game, with a total of 27 tracks making their way into the downloadable title.