In 2004, scholar Olga Digonskaya discovered a substantial cache of Shostakovich autographs, sketches, and rejected drafts in a Moscow archive. The most sensational find was music intended for an operatic satire, Orango — dating from the early 1930s — that never saw its realization in performance.

Until December 2011, that is. Read Mark Swed's review of the Los Angeles Philharmonic's premiere in the Los Angeles Times.