Hi, Jeannette-- i'm a little late joining this conversation, but can't help myself. You've excellent suggestions so far. Still, you might want to listen the 1st mvt. of Brahm's second symphony and the third mvt. of his third symphony. None are fugues. The first example has canonical entrances of the well known "Lullaby" theme. The second, while not using imitative polyphony at all, is full of independent voices that are well defined. Brahms was a fantastic orchestrator defended by Rimsky-Korsakoff, himself. He merely said that we don't run to Brahm's scores because he had no interest in inventing new combinations of sound. Still, his sense of mixing, balance, and definition were infallible. Some other pieces to consider: Bartok's Concerto for Orchestra (finale), and Britten's Young Person's Guide to the Orchestra (you can just search for the fugue). Getting away from "B" composers, try Nino Rota's Concerto for Trombone and Orchestra (1st mvt.) and the second mvt. of Stravinsky's Symphony of Psalms (which opens with a canon in the winds.) i hope that helps! Tom