fɹˈænsɪs ɡɹˈæsoʊ wʌzðə fˈɜːst dˌiːdʒˈeɪ tə jˈuːz hˈɛdfoʊnz ænd ɐ bˈeɪsɪk fˈɔːɹm ʌv mˈɪksɪŋ æt ðə nˈuː jˈɔːɹk sˈɪɾi nˈaɪtklʌb sˈæŋktjuːˌɛɹi.
Francis Grasso was the first DJ to use headphones and a basic form of mixing at the New York City nightclub Sanctuary.