I'm sorry yer honour, I couldn't help meself. Both parents were professional musicians and my kid bro. joined the school band (strictly
NO girls, but plenty of rumours).
My bro. used to listen to a lot of classic rock, Queen, King Crimson, Eric Clapton etc. While I explored, first the collection of 78's inherited from my grandfather, then my parents LPs. I guess I always found "pop" music too ... disposable. Classics moved me in a way that the Bay City Rollers never did (oop! showing my age now
).
I recommend listening to everything and anything you can beg, borrow or steal (well, maybe not
steal). Make notes on what appeals to you, and explore the genre further; are there other pieces by the same composer that you enjoy? from the same period? for the same instrumental voices?
In addition to Pim's list, look out for;
Hildegard von Bingen - any of the Gothic Voices recordings
Tylman Susato - Danserye (a collection of dances), rather good version by the London Consort.
Giles Farnaby - Farnaby's Dreame
Vivaldi - four seasons
Haydn - kleine orgelmesse
Britten - orchestral interludes from Peter Grimes