After hopping onto an "I Ain't Going Broke Back" remix with Mavado, Ace Hood, and Future a few months back, dancehall singer Vybz Kartel drops "Sumn Sumn," the lead single from Federation Sound's latest compilation, Highland Riddim, which is due out August 21. The song is deep, squirrely, and light-hearted, with shouts out Larry David

Highland Riddim features dancehall heavyweights Ward 21, Tifa and Mr. Lexx alongside newer artists like Road Elf, Marcy Chin and Shawn Storm. After having faced criminal murder charges and tremendous legal difficulties last year, "Sumn Sumn" is a promising sign that Kartel's work ethic is intact, at least for now. Listen to Vybz Kartel's "Sumn Sumn" below. 

You can pre-order Highland Riddim on iTunes right now.