Featuring 68 high school-aged cast members, Les Miserables is the biggest production Nexus has taken on.

Director Julie Lovell said the show's music, sets and themes were complex.

"We're pretty excited, the kids are doing amazingly well. I would say its our best show yet," she said.

"People are going to be blown away at seeing a group of high schoolers performing a show like this. This is the biggest show we have done. You would think Phantom of the Opera (last year) would be but this involves a rotating floor and some exciting stuff with the set.

"Musically, this show has a phenomenal amount of complexity. It's an all-singing show but its complex in that the ensemble is so involved.

"It's ensemble driven, Les Mis is about the miserable people. The costumes are incredible and the whole thing looks terrific."

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Ms Lovell said each character got their moment in the spotlight.

"Every lead has a moment to themselves that takes you to this pensive way of thinking, then the ensemble comes back and drives you (forward)," she said.

"You don't know where to look. There's so many things going on that if you only watch the leads, you miss something."

Nexus had been reluctant to take on Les Miserables in the past because of the mature themes, Ms Lovell said.

"We avoided it for the first eight years because we thought it was too adult themed," she said.

"We have had to talk through more mature themes like women being abused or kids in starvation, those are pretty deep ideas. We have to let kids process that. We chose Les Mis because of the realities we face, that there are vulnerable people in the world.

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"It is very mature-themed show but we realised there's a part of what we can do, which is to teach kids about the realities of whats going on in the world and talk with them about life.

"(Over the years) we have begun to develop those skills in the kids and as we do that. As we have done that we have been able to choose shows that have depth in them."

Nexus BYT's production of Les Miserables is on at The Capital on July 25, 26 and 27 and August 1, 2 and 3 at 7pm. It is also on at 1pm on July 27 and August 3.

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