Young Thug has been a presence in Atlanta street-rap for years, but with his yammering helium croak and his head-blown stream-of-consciousness lyrics, he always seemed too weird for mainstream consumption. That changed in 2014, when Thug scored a handful of underground hits out of nowhere. And his star went to another level when he linked up with Rich Homie Quan, whose bluesy baritone gurgle turned out to be the perfect complement to Thug’s yip. Under Birdman’s tutelage, the Rich Gang mixtape finds them in an ideal place: Still figuring out how to make hits, still excited enough to make those hits weird. Savor it while it lasts. –Tom [LISTEN]