I am sure that people will groan when they see this, but how about a musical about:
-- Judy Garland
-- Al Jolson
The musical Jolson won the Olivier award for Best New Musical in 1996.
I would love to see My Best Friend's Wedding using songs from the film soundtrack.
To my recollection, it has rarely been successful. Is there any example besides Mamma Mia, which IMO was such a big hit because of the sheer joyousness of the music (especially considering when it originally opened) and the perfect trivial plot to support the bubble-gum Abba music (which I generally love),
Though it was a flop in the US, We Will Rock You ran for 12 years in the West End and has had countless international productions and tours. And though it's slightly little different than what you describe, & Juliet appears to have the makings of a huge hit in London, featuring song by Max Martin, a pop songwriter known for dozens of hit songs performed by numerous famous pop artists and acts. At any rate, Chicago is set to premiere the new JBM featuring the songs of Britney Spears to an original story, Once Upon a One More Time. It's been delayed once already, so I'm curious to see what happens next.
"What can you expect from a bunch of seitan worshippers?" - Reginald Tresilian