I had a similar problem with a choir
admittedly it was a normal score- Rutter's Requiem- but the library I requested it from sent Rutter's arrangement of Faure's Requiem. The only alternative was to buy the score and then photocopy enough choir parts, which cost far too much. (The library's response was "We're not expected to know anything about music". X( )

I played "Fen Country" last year with my orchestra and adored it- I think it lends itself to interpretation well, too, which is why I'm annoyed that I can't get hold of it! I may resort to Greensleeves at this rate.
(Sivvus trolley collision in the fruit aisle led to a jam, Wed 10 Mar 2010, 22:09, Reply)