If there's anything exclusive to the Webber version (a character, item, or plot device), it would be protected under his copyright. The rest would not.
(i.e., the ruby slippers are still protected under a copyright since they were exclusive to the 1939 MGM screenplay, but "The Wizard of Oz' in general is public domain.)
That said, titles cannot be copyrighted, which is why there are movies, books, and songs with the same exact title that have absolutely nothing else in common.
So "Angel of Music" is usable as a song title or show title, as long as it shares no common lyrics (beyond nine successive words, I believe) and no common notes (beyond 12 consecutively). That would be plagiarism and a copyright infringement of the score.
It would be very hard to prove in a court since the source material is public domain.
EDIT: Those "technical limitations" of consecutive notes and words were given to me by a music lawyer with ASCAP who said that anything under that becomes very difficult to prove in a court of law. If you go past those numbers, it more than often will hold up as being an infringement.
"Jaws is the Citizen Kane of movies."
blocked: logan2, Diamonds3, Hamilton22
Updated On: 8/12/11 at 11:11 AM