The Cadillacs - Speedoo (1955) "Speedoo," released by The Cadillacs in November 1955, is a hallmark song of the doo-wop era, named after lead singer Earl "Speedoo" Carroll's nickname. Crafted in the vibrant music scene of Harlem, the song combined playful lyrics with a catchy melody, showcasing The Cadillacs' unique sound and style. Its upbeat tempo and tight vocal harmonies marked a departure from the slower ballads of the time, injecting energy and humor into the genre. The song's immediate su