Rubuta ci gaba ga wannan sakin layi - A shekara ta 1953, Treigle ya yi wasan farko na New York City Opera, a matsayin Colline a "La bohème". Shekaru uku bayan haka, bass-baritone ya sami nasararsa ta farko, a matsayin Reverend Olin Blitch, a farkon New York na "Susannah" na Floyd. Ya fara fitowa a Turai a wannan wasan opera, a Brussels World's Fair
, a shekara ta 1958.