The Minstrels' Gallery is WAY up. Must be nice for some Gabrieli or Monteverdi "surround" choir music. I don't think it will be of use for any larger groups.
Well, I
could imagine Mozart Requiem "Voca me" sopranos from up there, or St Matthew Passion's "coro in ripieno". Both will be VERY difficult to get together with the orchestra below though.
For smaller ensembles: Church of St Mary of Ottery (in Ottery St Mary) is located on a hill in a small town. VERY quiet except for some birds. It was designed to be a small version of Exeter Cathedral.
And it MUST be great for recording Coleridge songs
