Stacy can refer to more than one musical group on last.fm: 1) Stacy is a Brazilian pop punk band. 2) Stacy is the name of a character on Disney's Phineas and Ferb. The song "Little Brothers" is sung by her, and properly attributed to the name Stacy (not the actress or the show). 3) Stacy, a Malaysian singer. (Stacy AF6) 4) Stacy a.k.a. producer of beats for the rap collective from Salem, Oregon known as Two White Gangstas In the Flippin West Coast a.k.a. TWGITFWC.