"The Royal Opera House Covent Garden Limited" -> "Hi! I come to England to hear overtures played!" (by Tony Crafter using Anagram Genius) (2008) (pending approval)
"Opera singer" -> "Ping! Sore ear." (by Mike Mesterton-Gibbons by hand) (2003)
"Opera singer" -> "Orgies 'n' rape?" (by Rick Rothstein using Anagram Genius) (2003)
"The Sydney Opera house" -> "Yo! Espouse Haydn there." (by Mick Tully using Anagram Genius) (2002)