Two of hip-hop's most heralded acts are apparently working on a new album together, according to HipHopDX. KRS-One and DJ Premier last collaborated on the "Classic" track for Nike, which also featured Nas, Rakim, and Kanye West, and an updated version of "Criminal Minded" for Smirnoff. But now the rap legends are doing a full-on collaboration record, something that appears to be making a comeback these days. While it remains up in the air how this will turn out, as some will argue these guys are past their "prime," any hip-hop head knows Premo and KRS have it in them to create damn good music. And their LP, Return of the Boom Bip, reportedly features similar greats like Q-Tip and Grand Puba.