Rearranging the letters of ''Pieta' by Michelangelo Buonarroti' gives:
O, a holy or giant piece, but in marble.
(by Segura) (2002)
Other related anagrams without their own page:
"Michelangelo Buonarroti's famed 'Pieta'" -> "Ceiling painter, he'd a famous marble too!" (by Segura) (2003)
"The sculptor and painter Michelangelo" -> "Eminent chapel-decorator's up all night!" (by Tony Crafter using Anagram Genius) (2006) (pending approval)
"Michelangelo di Lodovico Buonarroti Simoni" -> "I on huge oil-color icons, I'm David in marble too." (by Aronas Pinchas ) (2011) (pending approval)
"Michelangelo di Lodovico Buonarroti Simoni" -> "Oo! God In Heaven! Is immortal icon. I build color." (by David Ekstrom using Anagram Genius) (2009) (pending approval)
"The Michelangelo Buonarroti's masterpiece 'Creation of Adam'" -> "God imparts to first man one choice - anima. Elaborate clue here." (by Aronas Pinchas) (2011) (pending approval)