Several things about the upcoming production of “Heidi” might surprise people.

Most are unaware that “Heidi” has even been adapted into a musical. Out of the 28 people performing, 20 of them are under 17 years of age.

There is a logical explanation.

The Ames Children’s Theater and ACTORS are doing their annual collaboration.

Maureen Friedrich, musical director of “Heidi,” said it was chosen because it was always one of her favorite movies.

“A friend and I said ‘Hey, wouldn’t it be wonderful if their was a musical script for it,” Friedrich said. “And then, after some digging we were able to find three adaptations for Heidi.”

Carole Horowitz, president and founder of the Children’s Theater (which was launched in 1968), is co-producer for this musical. She said this year’s was one of the best audition groups ever, with over 70 people, all of whom could sing.

Horowitz said the cast has been rehearsing since January, and one cast member in particular is Laverne, a live goat. Horowitz believes that Laverne is getting used to the limelight.

“Laverne is standing on stage and playing her role better every night,” Horowitz said.

The 20 children and eight adults in the cast have worked hard on the production, and share a lot of enthusiasm for the show.

Twelve-year-old Mandie Pirog, who plays Heidi, is no exception.

“This is what I would like to do with my life,” Pirog said. “I auditioned for the role of Heidi, but I said that I would take any role.”

Pirog, who will be performing her first lead role, has spent long hours memorizing lines.

“I got the script in December and have spent a lot of time memorizing my lines since then,” Pirog said.

Horowitz and the rest of the cast and crew are expecting good crowds bordering on sellouts. Although you can buy tickets at the door, Horowitz advises buying them in advance.

“We are expecting good turnouts for all the shows,” Horowitz said. “We expect that some of them will be sold out. I don’t want to discourage anyone from coming though, because they believe all shows will be sold out. Just play it safe, and get your tickets in advance.”