What pseudonym did Paul McCartney use for the 1977 album 'Thrillington'?

Paul McCartney used the pseudonym Percy Thrillington for the 1977 album Thrillington.

Thrillington was an instrumental orchestral reinterpretation of McCartney and Linda McCartney's 1971 album Ram. The sessions took place at Abbey Road in June 1971, with arrangements by Richard Anthony Hewson. McCartney produced the project but did not play or sing on the record, which helped distinguish it from his regular releases.

The album was shelved when McCartney and Linda formed Wings, then revived for release in 1977. McCartney invented the fictional socialite Percy “Thrills” Thrillington and even placed newspaper advertisements suggesting that this unusual character had a busy public life. His own name appeared only indirectly in the liner notes.

Listeners quickly suspected that Percy was McCartney, but he did not formally confirm it until a press conference in Los Angeles on 27 November 1989. The album is often confused with another McCartney pseudonym, Clint Harrigan, who was credited as its liner-notes writer. Thrillington initially went unnoticed and did not chart.