Rearranging the letters of 'The Quarrymen.' (Pop group which spawned the Beatles) gives:
Ha! Try Queen, Mr.
(by V.Rabin) (2005) (pending approval)
Other related anagrams without their own page:
"Sir Paul McCartney, singer of The Beatles and Wings" -> "Geriatric windbag, useless remnant. (Plenty of cash.)" (by David Bourke using Anagram Genius) (2004)
"The late John Lennon, Sir Paul McCartney, the late George Harrison, and Ringo Starr" -> "In long careers, they all once sang major hits in a rather talented Northern group." (by Larry Brash) (2004)
"The former Beatles singer/bassist Paul McCartney" -> "Being that silly scouser, a perfect embarrassment!" (by David Bourke using Anagram Genius) (2004)
"Beatles" -> "Be stale." (by Joe Fathallah by hand) (2004)
"The late George Harrison" -> "Singer: Altogether a hero." (by Larry Brash) (2001)
"George Martin" -> "Rogering mate." (by David Bourke using Anagram Genius) (2002)