He also became Director of Music at St George 's Church , Belfast .
In 2000 , Harrison took up a part - time teaching position at Queen 's University Belfast , specialising in harmony , counterpoint and keyboard skills .
Harrison also became Director of Music at St George 's Church , Belfast .
In 2000 , Harrison took up a part - time teaching position at Queen 's University Belfast , specialising in harmony , counterpoint and keyboard skills .