Leonard Warren Was Born in New York on April 21, 1911. Operatic Baritone Who Most Notably Sang the Lead Role in Verdi’s Acclaimed Opera, Rigoletto. He and Soprano Leontyne Price Performed Together for a Recording of the Verdi Opera Il Trovatore. He Sang in the Radio City Music Hall Chorus During the Mid-1930S and Made His Metropolitan Opera Debut in 1938.