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On June 26, 1970 the jazz pianist and composer Bill Evans (August 16, 1929 – September 15, 1980) played with his trio—Eddie Gomez (*1944) on bass and Marty Morell (*1944) on drums—at the Kongsberg Jazz Festival in Norway. In the liner notes of the concert recording, Marc Myers writes that, at the start of 1970, Bill Evans had begun to wean himself off his notorious heroin habit by enrolling in a supervised methadone program at New York’s Rockefeller University. Long known for his withdrawn, sullen perch at the piano—a mood brought on by his heroin use—Evans on...