Kozłowski's uncle, Vasily Fyodorovich Trutovsky (a famous hussler in his time), noticing his nephew's musical abilities, took him to study in St. John's Church in Warsaw, where the young musician received a musical education and underwent practice as a chanter, violinist and organist.
kəzlˈoʊskɪz ˈʌŋkəl, vˈeɪsili fˌaɪoʊdɚɹˈoʊvɪtʃ tɹuːtˈɑːvski ɐ fˈeɪməs hˈʌslɚɹ ɪn hɪz tˈaɪm, nˈoʊɾɪsɪŋ hɪz nˈɛfjuːz mjˈuːzɪkəl ɐbˈɪləɾiz, tˈʊk hˌɪm tə stˈʌdi ɪn sənt. dʒˈɑːnz tʃˈɜːtʃ ɪn wˈɔːɹsɔː, wˌɛɹ ðə jˈʌŋ mjuːzˈɪʃən ɹᵻsˈiːvd ɐ mjˈuːzɪkəl ˌɛdʒuːkˈeɪʃən ænd ˌʌndɚwˈɛnt pɹˈæktɪs æz ɐ tʃˈæntɚ, vˈaɪəlɪnˌɪst ænd ˈɔːɹɡɐnˌɪst.