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-soonWilliam 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.
An illuminating discussion of some difficult 12-Tone music. Also, for the three people who look at this, below is an album with Uchida playing several Second Viennese School classics, including the Concerto for Piano in the clip, with Boulez keeping time instead of Tate. The disc also has some solo piano music by Schoenberg, Webern, and a Berg sonata that I've never really enjoyed.