Her warm, sexy vocals have graced many a house music track since 1995, but Lisa Shaw's name is still fairly obscure. She's a "house diva" -- owner of an anonymous voice that soars above crowded dancefloors at 3 a.m., enchanting listeners, only to disappear a few minutes later. Anyone who's ever gone clubbing has probably heard her -- possibly more than once. Shaw is nearly ubiquitous in the house music scene. She's collaborated with many famous producers, and has appeared on countless compilations. And finally, in 2001, Shaw began to make tentative steps toward the spotlight.