hiː mˌeɪd hɪz ˌɑːpɚɹˈæɾɪk deɪbjˈuː ɪn nˈaɪntiːnhˈʌndɹɪd fˈɪftiːn, sˈɪŋɪŋ θɹˈiː jˈoʊhɑːn stɹˈɔːs sˈɔŋz æz ˈeɪ "ɡˈɛst" ɪnðə pˈɑːɹɾi sˈiːn ʌvðɪ ˌɑːpɚɹˈɛɾə dˈaɪ flˈɛdɚmˌaʊs.
He made his operatic debut in 1915, singing three Johann Strauss songs as a "guest" in the party scene of the operetta Die Fledermaus.