A parade of musicians moved through the ranks of the Clowns. Williams, who was also a Mardi Gras Indian, sang lead or back-up vocals in various Clown configurations. Huey Smith had an open-minded approach to who sang lead vocals. "Some things like 'Beatnik Blues', 'Genevieve', I figure John Williams can do better than Bobby (Marchan)," Huey said. Williams was the lead singer on other songs for Huey, including "Tu-Ber-Cu-Lucas And The Sinus Blues", and "Quit My Job". He sang with Bobby Marchan on "Don't You Just Know It", Gerri Hall on "Would You Believe It (I Have A Cold)" and "Pop-Eye", as well as on "Just A Lonely Clown", "For Crying Out Loud", "Scald-Dog", and "Talk To Me Baby". Huey Smith and the Clowns, including Williams, recorded the massive two-sided hit "High Blood Pressure" and "Don't You Just Know It", which stayed thirteen weeks on the Hot 100, the latter climbing to #9. It was one of the biggest records of 1958.
