The Gaslamp Killer's afternoon outdoor set was an indisputable highlight of last year's Decibel Festival: an omnivorous DJ mix that jumped hyperactively and unpredictably from spacey '70s jazz funk to hiphop to dubstep to Krautrock to Jimi Hendrix to the perennially sampled ESG, all without ever dropping the beat. He reveals rare grooves and revels in atypical beats, but always has one ear to the dance floor. Plus, he gets good and chatty on the mic—hyping crowds, swearing up a storm, and generally enjoying the hell out of himself. It's infectious. (Neumos, 925 E Pike St, 709-9467. 8 pm, $15, 21+.)