Duke’s final extended piece (named for the Black King of the Magi, King Solomon and Dr. Martin Luther King, Jr.) was orchestrated by Luther Henderson under the direction of Duke, who lay sick in a hospital bed. This performance at the Polish festival Jazz Jamboree came out as a collector’s item in ’81 but has never seen the light of day since. Powerful and deeply spiritual, it joins Ellington’s only piano concerto, "New World A-Coming," and a full orchestration of Duke’s ballet piece "The River"! Squatty Roo.