NYC's synth-saavy duo Holy Ghost! are taking the show on the road to promote their new album, Dynamics. Released on James Murphy's DFA Records, Dynamics features an armada of electronic gear that Holy Ghost! are non too keen on leaving in the studio. In this video from The Late Show With David Letterman, the group performs their new single 'Dumb Disco Ideas' amidst a stage full of analog gear including a Minimoog, Sub Phatty, Slim Phatty and modular synthesizer... There is even a Theremin solo at the 2:20 mark.