Today sees the release of Vicious Lies and Dangerous Rumors, the second proper solo album from OutKast's Big Boi. Its strength is its sonic adventurousness — in addition to the Southernplayalisticadillacmuzik you'd expect, there are forays into rock (guest appearances include Wavves and Phantogram), Princely Linn pop, balladry, weird atmospheric shit and, in the case of the track above, cosmic disco (or, at least, as close to a commercial rapper has ever come to the subgenre). The implicit showing off — Big Boi is so good, he can span genres without a stumble — hits harder than any stated boast. This is a subtle and persuasive new chapter for brag rap.