"The show's two leads, Ali Harper and Russell Dixon, play the roles of reunited lovers Donna and Sam. They have landed in Hamilton from their respective homes in Christchurch and Auckland respectively," Balme said.
"Sought-after Waikato talent will support the leads, including Loretta Wilkinson in the role of Tanya; Lisa Wiles in the role of Rosie; Nick Wilkinson in the role of Harry; and Ben Moody in the role of Bill.
"The younger leads will be played by University of Waikato voice major Gwen Lyon in the role of Sophie, with her love interest played by Conor Gyde; both University of Waikato Sir Edmund Hillary Scholars."
In Hamilton, Mamma Mia will be directed by David Sidwell, musically supervised by Alex Wiltshire and choreographed by Sonja McGirr-Garrett.
The set is said to be one-of-a-kind. It was built by a consortium of 10 musical theatre societies around New Zealand, who pooled resources to secure the show's performing rights and then design and build the props and costumes.
Balme describes Mamma Mia as the story of character Sophie's quest to find her father.
"Sophie is getting married to her fiance Sky and her idea of a perfect wedding includes her dad walking her down the aisle, only she doesn't know who her father is.
"She finds her mum's diary and discovers her mother was sleeping with three men at the time of Sophie's conception. So she invites all three men to the Greek island she lives on, assuming she will know her dad once she sees him," she said.
Hamilton Operatic Society business manager Jason Wade says ticket sales are already far-exceeding expectations.
"Ticket sales have spiked even more quickly than they did for Hamilton Operatic Society's hit shows Cats in 2012 and Phantom in 2014.
"We are not surprised, given that this show appeals to such a wide audience. We are confident that Waikato families, young and old, will fill the seats of Founders Theatre for what is expected to be one of the most entertaining musicals in a long time."
Tickets are on sale now through Ticketek.