Boulanger gave Gershwin basically the same advice she gave all her accomplished master students: "What could I give you that you haven't already got?"
bˈuːlændʒɚ ɡˈeɪv dʒˈɜːʃwɪn bˈeɪsɪkli ðə sˈeɪm ɐdvˈaɪs ʃiː ɡˈeɪv ˈɔːl hɜːɹ ɐkˈɑːmplɪʃt mˈæstɚ stˈuːdənts: "wˌʌt kʊd aɪ ɡˈɪv juː ðæt juː hˈævənt ɔːlɹˌɛdi ɡˈɑːt?"