When it comes to the studio side of LCD Soundsystem, nearly everything revolves around the restless mind of James Murphy — New York’s poet laureate of post-punk, twisted techno, and the kind of disco records that used to get burned in baseball stadiums. The band’s live show is more of a group effort, however, a well-oiled dance machine that ranks as one of indie rock’s only guaranteed good times. London Sessions bottles some of that energy like one of John Peel’s classic BBC tapes, easily shifting from the floorboard-pounding rhythms of “Us v Them” and “Pow Pow” to the groove-locked navel-gazing of “I Can Change” and “All My Friends.” And while LCD’s latest — 2009’s This Is Happening album — gets the most love, there’s enough fan favorites from other releases to make this a greatest hits set of sorts. Or at the very least, an excuse to scream "Your city's a sucker! My city's in heat!" from the comfort of your living room.