Appalachian Spring by Copland recorded by Michael Tilson Thomas and the San Francisco Orchestra on RCA. With a great system the experience in nothing short of fantastic.
Beethoven's Piano Sonata #30 by Wilhelm Kempff on DG. The third movement seems to place us on a plateau rarely visited.
Franz Schubert's Death and the Maiden Quartet by the Takacs Quartet on Hyperion. The music is beautiful and angry, and the recording realizes the tremendous angst of the composer.