It all started here. Last year’s Coachella was abuzz about the debut of the “Get Lucky” promo video, which unofficially marked the beginning of the comeback that launched Pharrell Williams to unprecedented heights. A year later, Pharrell was at Coachella in the flesh and feeling on top of the world (dust-related vocal problems notwithstanding). Had he given us the Buffalo Hat Revue and stuck to post-“Get Lucky” material, no one would have blamed him, but fortunately Pharrell wanted to let all his new fans know how many of their favorite songs he produced. Thus, Nelly, Busta Rhymes, Diddy, Snoop Dogg, Diplo, Gwen Stefani, and Tyler, The Creator showed up to perform or just dance around on stage. It all wrapped with Pharrell pulling the whole congregation of famous people on stage — Lorde and Este Haim included — for a very “Happy” dance party.