ɪnðə lˈeɪt nˈaɪntiːnhˈʌndɹɪd fˈɪfti z, kˈɑːnstənt wʌz kəmˈɪʃənd baɪ lˈʌd ɡlˈʌskɪn ʌv sˌiːbˌiːˈɛs tə kɹiːˈeɪt ɐ nˈʌmbɚɹ ʌv ʃˈɔːɹt pˈiːsᵻz fɚðə sˌiːbˌiːˈɛs stˈɑːk mjˈuːzɪk lˈaɪbɹɛɹi ðæt kʊd biː jˈuːzd ɪn sˌiːbˌiːˈɛs ɹˈeɪdɪˌoʊ ænd tˌiːvˈiː ʃˈoʊz.
In the late 1950s, Constant was commissioned by Lud Gluskin of CBS to create a number of short pieces for the CBS stock music library that could be used in CBS radio and TV shows.