Congratulations!

THRILLINGTON is absolutely correct.

Let's talk about this!

Yes, all the previous answers were alter egos of famous musicians! Prince used many different names, including "Alexander Nevermind" for his songwriting. "Mr. Wiggles" is an underwater DJ pseudonym used by George Clinton. Of course, Bowie was "Ziggy Stardust", and David Johansen used the name "Buster Poindexter". And Garth Brooks released an entire rock album as "Chris Gaines."

But who is "Thrillington"? In 1971, Paul McCartney, after a handful of post-Beatles albums, both solo and with his wife Linda, decided to record an album of instrumental covers of each of the tracks of their album "Ram". The album sat, unreleased for five years, while Paul and Linda formed the band Wings. In 1976, Paul decided to release the album, but, ever the jokester, invented a fictional musician, Percy "Thrills" Thrillington, to credit the recording under. He left his real name mostly off the album, only appearing once in the liner notes as a "friend of Percy".