STEREOLAB's penchant for crafting droning rhythms, Moog jams and space-age bachelor-pad music set a precedent for experimental sounds in the '90s. With their 4AD debut, Chemical Chords, the pop explorers churn out their catchiest songs this side of the millennium. Recent material such as "Pop Molecule," "Cellulose Sunshine" and "Daisy Click Clack" channel the "groop's" cosmic music into digestible bursts of short pop songs. But for its show Fri., SEPT. 26, expect nothing less than a headlong trip into melancholia and '60s psych pop, sans kitsch. Atlas Sound (aka Deerhunter's Bradford Cox) also performs. Herb and Jason Harris of the Selmanaires open. $20-$22.50. 8:30 p.m. Variety Playhouse, 1099 Euclid Ave. 404-524-7354. www.variety-playhouse.com.