Post-Otis Redding crooner H.W. Casey and funkster Richard Finch weren't just skilled soul-crossover whizzes with a knack for stoking a cheesy good time. As the driving forces behind KC and the Sunshine Band, Casey (singer, keyboardist, producer) and Finch (bassist, drummer, producer) were one of the most brilliant musical teams in '70s pop. The music they made in South Florida during the tumultuous post-Nixon era pulled Latin and Caribbean music's sensual energy, Motown's bright-eyed optimism, funk determinism, and a Beatlesque pursuit of a universally transporting tune into escapist, positive dance music that changed the way America danced and did the deed -- possibly forever. This essential two-disc set covers the band's history, from the string of '70s chart-toppers ("Get Down Tonight," "Boogie Shoes," "That's the Way (I Like It)," "(Shake, Shake, Shake) Shake Your Booty," et al.) up to KC's 1983 solo sun shower "Give It Up." The quality does vary, especially as the years progress and the magic wanes. But even when the tunes fail to rise above the grooves, the purely functional dance numbers ("Do You Wanna Go Party?") still have a lush richness that less soulful disco didn't even try to feign. An American classic.