NEW YORK (AP) - The Tony Award-winning musical "Once" has proved to be a song at the box office: It has recouped its $5.5 million investment in less than six months.

Produces announced on Monday that the show has turned profitable after just 21 weeks, or "faster than any new Broadway musical in more than a decade."

The musical starring Steve Kazee and Cristin Milioti is based on the 2006 film about an unlikely romance between a Czech flower seller and an Irish street musician in Dublin.

Like the film, the musical features songs by Marketa Irglova and Glen Hansard, including "Falling Slowly." It won eight Tonys and last week earned an average ticket price of $124.27.

Traditionally, only about 3 in 10 Broadway shows recoup.