 He notably recorded the role of Valentin in "Faust" with the NYCO for MGM Records in 1951 and portrayed Petruccio in the world premiere of Vittorio Giannini's "The Taming of the Shrew" in 1958.In 1955 Cassel left the NYCO to rejoin the roster at the Met by the invitation of Rudolf Bing, making his first appearance under his new contract at the house as Scarpia to the Tosca of Renata Tebaldi and Cavaradossi of Giuseppe Campora on March 8, 1955.Cassel remained at the Met up until his retirement from the stage in 1974, being absent at the house during only three seasons of those years.