“Farewell to John Denver,” which contained a few bars of Eric Idle impersonating John Denver singing a parody of “Annie’s Song,” followed by the sound of the singer being strangled, was removed from subsequent pressings of the UK version on legal advice (reports differ as to whether it had to do with the licensing of “Annie’s Song” or the depiction of the popular singer being murdered), and was replaced by an apology spoken by Terry Jones. In the U.S. there was no need to clear the John Denver parody, as parodies are covered under U.S. copyright law. Later CD releases of the album reinstated the John Denver track, but after Denver’s death in a plane crash, the 2006 reissue reverted to Terry Jones' apology. (The original “Farewell To John Denver” track can be found on the Arista CD The Monty Python Instant Record Collection.) Original advance print advertising by Charisma Records included the tagline, “Now A Major Lawsuit.”

Monty Python's Contractual Obligation Album - Wikipedia — Wikipedia

Monty Python's Contractual Obligation Album is the final studio album by Monty Python, released in 1980. As the title suggests, the album was put together to complete a contract with Charisma Records.