Children from the isolated Northern Territory town of Tennant Creek are preparing to sing in an Opera Australia production of Mozart's The Magic Flute.

The group of seven school students from the town, 500 kilometres north of Alice Springs, will sing in a children's chorus for the stage performance.

The opportunity is part of the company's Regional Children's Chorus program which gives young people from regional Australia the chance to experience a professional opera production.

Year 7 student Kalyca Robinson said the performance would be her first time singing publicly.

"I wanted to join because it sounded like a great opportunity; we started with warm-ups and seeing how our voices connected, and just went on from there," she said.

The children will be playing the part of the spirit guides who advise the young prince Tamino on his journey to rescue a princess.

"He's trying to find this girl and this evil king actually takes her and these spirits come and help him," Kalyca said.

"I like getting out of my comfort zone and I actually found the story really interesting": Year 9 student Kirsty White. ( ABC Local: Emma Sleath )

Opera Australia choirmaster Alex Pringle was in Tennant Creek for final rehearsals with the children.

"It's a wonderful art form, [but] one that is generally associated with the older generation," he said.

"So it's [about] introducing a whole new generation of singers and concert goers to opera."

Last year, Mr Pringle travelled to 26 towns across the country to work with children's choirs for the program.

He said kids were embracing the art form.

"Wherever I go every group of children is completely different [but] at the same time they're all exactly the same," he said.

"As long as you can put it in a perspective that they understand they'll jump on board, you can pretty much guarantee it."

Choirmaster Alex Pringle works with children's choirs around the country for Opera Australia. ( ABC Local: Emma Sleath )

Opera Australia's production of the Magic Flute takes place in 1930s Egypt, so each child's outfits will include a red fez and long, flowing robe.

Year 9 student Kirsty White said she was nervous about the performance but wanted the experience.

"I like getting out of my comfort zone and I actually found the story really interesting," she said.

"We had the whole day of actual school to come and practice, which we were all kind of happy about."

Mr Pringle said: "On the day of the opera it's all a bit shell shocking ... their eyes are just everywhere. But then they come off at the end of the show and it's like, yeah, I'm an opera singer now, that's what I do."

Opera Australia's The Magic Flute is on at the Tennant Creek Civic Hall on August 4.

The event forms part of the 2015 Desert Harmony Festival, presented by Barkly Regional Arts.