Conversation so far:
What was The Sound of Music's London revival?ˆ
In 1981, at producer Ross Taylor's urging, Petula Clark agreed to star in a revival of The Sound of Music at the Apollo Victoria Theatre in London's West End.
When was The Sound of Music revived?
The Sound of Music was revived in 1981.
Where was The Sound of Music revival shown?
The Sound of Music revival was shown at the Apollo Victoria Theatre in London's West End.
Was The Sound of Music revival a success?
Petula Clark opened to unanimous rave reviews and the largest advance sale in the history of British theatre at that time.

Question: How long was the revival?
Self-contained rewrite: How long was The Sound of Music 2006 revival?