Rearranging the letters of 'The Glastonbury Festival' (UK Music Festival) gives:
Rave - by gnats. Flush toilet!
(by Stanley Accrington by hand) (2003)
Unreal TV: Filthy bog seats!
(by Mick Tully using Anagram Genius) (2008) (pending approval)
Safety! Halt virulent bogs!
(by Mick Tully using Anagram Genius) (2008) (pending approval)
Helluva big tents of artsy.
(by Mike Mesterton-Gibbons by hand) (2007) (pending approval)
The belt of sylvan guitars.
(by Mike Mesterton-Gibbons by hand) (2007) (pending approval)
Other related anagrams without their own page:
"The Glastonbury Festival of Contemporary Performing Arts" -> "Oft music lovers gather tents by farm for long, open-air party." (by Mike Mesterton-Gibbons by hand) (2007) (pending approval)
"The Glastonbury music festival, Pilton, Somerset" -> "Top-artist ensembles...still such a fun groovy time!" (by David Bourke using Anagram Genius) (2004)
"The Glastonbury Music Festival" -> "First lusting, easy love, cum bath." (by Joe Fathallah by hand) (2004)
"The Glastonbury Music Festival" -> "'Live' set. ...Stony fabric must laugh!" (by Mike JH Ryan by hand) (2014) (pending approval)
"Glastonbury Festival" -> "Lavs often burst gaily." (by Stanley Accrington by hand) (2003)
"Glastonbury Festival" -> "Lots raving. Flat. Buy "E's"" (by Stanley Accrington by hand) (2003)