This L.A. foursome – comprised of Kendrick Lamar, Schoolboy Q, Ab-Soul and Jay Rock – formed in 2009, quickly drawing endorsements from Cali legends like Dr. Dre and Snoop Dogg. While they have yet to release an official collaborative album, they've built impressive individual followings with their strong mixtape work. Each is a potential star; together they might just represent hip-hop's new royal family.
Artist To Watch: Ab-Soul
Hot Track: Kendrick Lamar, "Swimming Pools (Drank)"