We performed the Verdi Requiem in Winchester Cathedral last night. It was a superb concert -- the soloists were great (particularly the bass and the soprano), and the orchestra was good. The big difference in the choir, though, was almost certainly the fact that we sang without scores. This meant that we had few places to look other than the conductor. As a result, we were tighter rhythmically, and much more responsive to the conductor's indications on dynamics.
We also managed to pack out the cathedral -- over 900 tickets sold, almost all of them before the day, so that will probably have done the choir finances no end of good.
All in all, a very good concert.