Montreal duo Chromeo make unflappably cool synth pop and electro-funk that recalls the hammy charm and unassuming virtuosity of, say, Hall & Oates (with whom Chromeo have unironically collaborated). Their forthcoming third album is called Business Casual, which follows She's in Control and Fancy Footwork. The trio of titles tells you what these guys are about: ladies, dance moves, and style. NYC duo Holy Ghost! are DFA session musicians turned adroit disco popsters, impeccably remixing Phoenix, LCD Soundsystem, In Flagranti, and others, and recently releasing an EP of originals, Static on the Wire. (Showbox at the Market, 1426 First Ave, 628-3151. 8 pm, $21 adv/$24 DOS, all ages.)