
This jazz opera, first conceived in the 1930s and almost brought to fruition 30 years later, was left unfinished when Ellington died in 1974. A version by Marc Bolin, currently being staged at California’s Long Beach Opera and also being used for a production opening on Feb. 15 at Chicago Opera Theater, is the latest in a succession of “completions” crafted from surviving material:
http://www.npr.org/2014/02/02/269524876/duke-ellingtons-lost-opera-forever-a-work-in-progress