Back in summer 2009, the Beastie Boys were forced to pull out of their scheduled headlining performance at the All Points West music festival in Jersey City, N.J. Yauch had just announced that he'd been diagnosed with cancer, and the group was forced to cancel a lot of shows as he sought treatment.

Jay-Z gamely stepped in for the gig. He dedicated his entire performance to Yauch and opened the show with a cover of "No Sleep till Brooklyn," off of the Beastie Boys' classic album Licensed To Ill. It remains a wonderful nod to an artist and human that a lot of people are missing today.