I generally don't like much of Copland's music--though I haven't heard much of it, except in Spike Lee movies and the like--but the Piano Sonata (1941) is a great piece. HERE is a live recording made by the died-too-soon William Kapell at the Frick Collection in 1953. Also on the disk is Mussorgsky's Pictures at an Exhibition, most memorable in Ravel's orchestration, or as an Emerson Lake and Palmer live album, or a Tomita album, or as the intro to Method Man's Tical. I've never seen Cop Land.
