Watershed British indie label 4AD recently announced the head-turning but aesthetically logical acquisition of FL rapper/producer SpaceGhostPurrp to its storied roster, and they're chasing that with the news of another high-profile (and perfectly on-the-money) nabbing of hotly pursued buzzmongers Purity Ring (in conjunction with Last Gang). Congratulations all around. We've thrown Purity Ring on just about every list imaginable this ...