After making the announcement at the annual Midem music fair in Cannes, Harrison spent the early part of 1976 involved in activities other than music-making. Foremost among these was the court case, in New York, for a long-running plagiarism suit launched against him by music publisher Bright Tunes, who contended that Harrison had infringed on their copyright of the Chiffons' song "He's So Fine" in his 1970–71 hit single "My Sweet Lord". While in Los Angeles in February and March, Harrison worked on a proposed documentary film of his 1974 North American tour with Ravi Shankar. On 20 April, he made a guest appearance on stage in New York with the Monty Python comedy troupe, dressed as a Canadian Mountie, as part of the chorus on "The Lumberjack Song". Michael Palin of the Pythons later recalled that Harrison looked "tired and ill"; author Peter Doggett attributes Harrison's poor health to a lifestyle increasingly reliant on alcohol and cocaine, following the failure of his marriage to Pattie Boyd in 1974.