Red Bull's working on a series of exclusive songs called 20Before15, where they'll release 20 songs by 33 artists before December 20th. The most recent contribution to the project is "Knucklehead," in which Earl Sweatshirt teams up with Lil Herb for a look back at growing up a knucklehead. It's a great listen that shows off both guys' rhyming skill as well as Earl's knack for sample-heavy, old-school production. Check it out over at the 20Before15 website - if you act quickly, you could snag one of an exclusive 1,000 free downloads.
Part of Red Bull's 20Before15 series.