sentences:  His notable contributions include Musical Director of the St Mary's Singers at St Mary's Cathedral, Sydney and Director of Music at St Aloysius' College, Milsons Point in Sydney.Hissey has an association with St Mary's Cathedral which has spanned the past 65 years being accepted as a choral scholar to the "St Mary's Cathedral Choir" a young age and completing his schooling at the "Cathedral Choir School".After completing post graduate studies in Education in Sydney, Hissey embarked on the dual careers of teaching and concert singing.