Saturday Night Fever

Way before sibling rock bands Hanson or the Jonas Brothers, the Brothers Gibb -- calling themselves the Bee Gees -- took to the stage. Starting out as a novelty act in their childhood home of Australia, the trio of Barry, Robin and Maurice later achieved mainstream success around... more the world with their falsetto harmonized tunes, which featured prominently in the iconic disco flick "Saturday Night Fever." Baby brother Andy also created a singing career, breaking out into U.S. success at age 19. (Glenn A. Baker / Redferns / Retna Ltd. )