Gang Show Otago administration manager Leanne Brockie said 90 scouts and guides from around the region would be participating, and rehearsals had already begun.
The cast of 10- to 24-year-olds met at Waiora Scout Camp at Whare Flat during the weekend for a series of rehearsal workshops, in preparation for their performances at the Mayfair Theatre from July 19-23.
With a budget of about $50,000, a 15-piece orchestra, and an army of volunteers, the show would be far from amateur, she said.
It would contain a mix of old favourites and new music which would support the show's theme.
"All cast members have been sworn to secrecy about the theme, because it's supposed to be a surprise for the audience.
"All I can tell you is that the show is based on a popular children's story which was recently made into a block-buster movie," she said.
