STAGE TUBE: Highlights from the BBC's 'Over the Rainbow' Dorothy Talent Search

'Over The Rainbow', the BBC talent search for Dorothy in an upcoming Andrew Lloyd Webber production of The Wizard of Oz, made its debut on Saturday night to staggering numbers - an audience of over 7 million viewers, reports The Telegraph.

Following the success of How Do You Solve A Problem Like Maria?, Any Dream Will Do and I'd Do Anything, Over The Rainbow reunites host Graham Norton and Andrew Lloyd Webber, who, along with a brand new panel of experts (Sheila Hancock, Charlotte Church and John Partridge) and BBC One viewers, will choose a Dorothy to perform in the West End production of The Wizard Of Oz next year. The show transmited with a weekend special on Friday 26 and Saturday 27 March, then the live studio shows start on Saturday 3 April.

As the selection process continues, Saturday's show showcased the final 20 "Dorothys" in a studio-based "sing-off"' - judged by the panel and Andrew, who will make a selection down to 10 girls.

In a surprise "wild card" element of the show, after the panel - led by Andrew Lloyd Webber - has agreed upon the 10 finalists, viewers will be invited to vote to save one of the girls who doesn't get through the panels' vote, to return next week.

Telephone lines will open for a set amount of time after these 10 girls have all performed a sing-off song and the contestant with the most votes will be revealed the following week, in the first live show to air on 3 April.

Viewers will find out the results of the "wild card" vote, and the 10 Dorothys will perform for their chance to stay in the competition and be critiqued by the panel and Andrew.

Viewers have the opportunity to cast their votes and the outcome will be announced in the results show. The two contestants with the least amount of votes will perform a "sing-off" and Andrew Lloyd Webber will decide which contestant he wants to remain in the competition.