LCD Soundsystem sparked a revolution by coaxing rock kids onto the dance floor. DFA Records' The Juan MacLean picks up James Murphy's disco fixations with the slow-motion funk of “Running Back to You,” while The Rapture's “House of Jealous Lovers” ups the funk-punk quotient with sizzling drum grooves and unhinged howls. YACHT's “Psychic City” channels LCD's blasé cool into a wryly anthemic sing-along.