Before you slap on your dancin' shoes for electro duo Chromeo, consider two disturbing facts: (1) They are from Canada. (2) In his free time, guitarist Dave 1 teaches French at Columbia University. But in case the appeal of their over-the-top, glittery synth pop ever fades, they'll still have health care and day jobs. For now, la vie est une fête. SARAH MIRK