L.A.'s infamous electronic music party people are back with a spring fete, HARD Weekend, that's sure to thaw the winter cold off of hundreds of dancing bodies. Dance music giants Simian Mobile Disco and Fake Blood headline the night, along with Juan Maclean, Destructo, Mumbai Science and more. Club Nokia, 800 W. Olympic Blvd. 8 p.m. Sat. $30. http://www.hardfest.com.