mˈoʊst nˈoʊɾəbli, hˈaɪɑːk hˈoʊldz ðɪ ˈænjuːəl pɐsˈɪfɪk ɹˈɪm tʃˈɪldɹənz kˈoːɹəs fˈɛstɪvəl ɪn dʒuːlˈaɪ, bɹˈɪŋɪŋ sˈɪŋɚz fɹʌm ˈɔːl ˌoʊvɚ ðə juːnˈaɪɾᵻd stˈeɪts ænd ˈɛlswɛɹ tə həwˈaɪiː tə stˈʌdi kˈoːɹəl mjˈuːzɪk ʌvðə pɐsˈɪfɪk ɹˈɪm wɪð klɪnˈɪʃən hˈɛnɹi lˈɛk.
Most notably, HYOC holds the annual Pacific Rim Children's Chorus Festival in July, bringing singers from all over the United States and elsewhere to Hawaii to study choral music of the pacific rim with clinician Henry Leck.