"Entered from booking ledger and New York Times concert listing and review. All participants were members of the Metropolitan Opera Orchestra. The timpanist is not identified.\r\nWORLD PREMIERE of David Amram's SONATA FOR UNACCOMPANIED VIOLA\r\nWORLD PREMIERE of Yves Chardon's CONCERTANTE\r\n\"Who Makes Music.\" New York Times (1923-), 20 June 1971, p. 1. ProQuest. Web. 29 Sept. 2025.\r\nHenahan, Donal. \"Music: Met Musicians Aid Recitalist: Midhat Serbagi Plays Sonatas on Viola Five Colleagues Join in Chardon Premiere.\" New York Times (1923-), 22 June 1971, p. 29. ProQuest. Web. 29 Sept. 2025." . . "solo recital" . . . . . . "chamber music performance" . . "1971-06-20T20:30:00"^^ . "Midhat Serbagi, Viola" .