Aucoin had a musical education (i.e. he had either conservatory tutoring or maybe even post-secondary, classical training) and he uses it in an effective way, not just in writing but also in orchestrating.
ˈɔːkɔɪn hæd ɐ mjˈuːzɪkəl ˌɛdʒuːkˈeɪʃən ˈaɪ.ˈiː. hiː hæd ˈiːðɚ kənsˈɜːvətˌoːɹi tˈuːɾɚɹɪŋ ɔːɹ mˈeɪbiː ˈiːvən pˈoʊstsˈɛkəndɚɹi, klˈæsɪkəl tɹˈeɪnɪŋ ænd hiː jˈuːzᵻz ɪɾ ɪn ɐn ɪfˈɛktɪv wˈeɪ, nˌɑːt dʒˈʌst ɪn ɹˈaɪɾɪŋ bˌʌt ˈɔːlsoʊ ɪn ˈɔːɹkᵻstɹˌeɪɾɪŋ.