Thursday 21 August 1975 Concert 69 In person Thursday 2 October 1975 Concert 70 In person Thursday 6 November 1975 Concert 72 [Varèse] In person Thursday 11 December 1975 Concert 73 [Berio, Kagel] In person Thursday 22 January 1976 Concert 74 In person Thursday 18 March 1976 Concert 75 In person Thursday 8 April 1976 Concert 76 In person