I really love Copland's opera, The Tender Land, and sang the role of "Top" in the 30th anniversary production of the final revised version. The director decided that the character was so named because he was a ginger, so I had to dye my hair red for the production. Such gorgeous music, from near the end of his "Americana" period, but still in that vein. Copland conducted a concert version with the New York Philharmonic, excerpts of which were eventually released on CD. Philip Brunelle led the first full recording on Virgin Classics.
I also saw the production at Long Wharf in New Haven in 1987 about 5 times, where with the composer's agreement the orchestration was reduced to 13 instruments, similar to the reduced version of Appalachian Spring. This version was also released on CD.