OK I did a little checking- St Andrews Halls burned down in 1962 so I was taken to Ne'erday Messiah Concerts there- but it must have been with The Phoenix Choir as The Orpheus was disbanded in 1951 ---- but my father certainly had old fashioned records (75s?) of Orpheus that he played, All in an April's Evening, many Scots Psalms, Scots / Hebridean songs (Margery Kennedy Fraser -- OK I know there are issues with her- - !)
the Orpheus was magical, legendary.