Thanks for your recommendation Roger, I will surely try and go.  Simpson's
5th Symphony had been performed twice if I recall correctly, both times
in the UK.

P.S. For those interested, the concert details are:

March 26 & 27 2004, 8:00 pm. Performing Arts Center at 51 Walden St.,
Concord, M.A., U.S.A. Reserved seats: $18, $15 seniors and students Tel:
(978) 369-4967.

Brahms: Piano Concerto No. 1
Robert Simpson: Symphony No. 5

The Concord Orchestra, Richard Pittman (conductor), Russell Sherman
(piano).

Best wishes,
Andy