Easy a screenwriter BERT V.

ROYAL is adapting composer JASON ROBERT BROWN's teen musical 13 for the big screen.

The writer has been tapped to turn the Tony award winner's stage show into a movie musical for CBS Films, studio bosses announced on Tuesday (12Aug14).

It centres around a 13-year-old boy who moves from New York City to a small town in Indiana, detailing his struggle to win acceptance among his peers.

The production ran on Broadway for four months before it closed in 2009, and it starred singeractress Ariana Grande.

The musical has since been performed around the world, including a brief run in London's West End in 2012.