Pedzisa mutsara unotevera: Muna 1953, Treigle akaita New York City Opera yake yokutanga, saColline mu"La bohème". Makore matatu gare gare, bass-baritone yacho yakawana budiriro yayo yokutanga inokosha, soMufundisi Olin Blitch airwadziwa, muNew York kuratidzwa kwokutanga kwe"Susannah" yaFloyd. Akaita kutanga kwake muEurope muopera imwe chete iyi, pa
Brussels World's Fair, muna 1958.