 Calvin sang the children's song "Never Smile at a Crocodile" for Disneyland Records, a recording that was later reissued as part of a "Peter Pan" soundtrack CD.He also sang "We Won't Be Happy Till We Get It" with Ray Bolger and "Slowly He Sank To The Bottom of the Sea" on the "Babes in Toyland" soundtrack.After "Zorro" and his Disney contract ended, Calvin guest starred in numerous television series during the 1960s.