PHOTO CALL: Broadway's Once Celebrates 500 Performances, Welcomes Arthur Darvill and Joanna Christie

The Tony Award-winning musical Once celebrated 500 performances on Broadway May 29 and officially welcomed new cast members including New "Guy" and "Girl" Arthur Darvill and Joanna Christie.

Inspired by the indie film of the same name, the musical about a Dublin street singer and the woman who comes to inspire him opened on Broadway to acclaim March 18, 2012. It has a book by playwright Enda Walsh and utilizes songs from the film by songwriters Glen Hansard and Markéta Irglová.

Darvill is best known for portraying Rory Williams on the BBC series "Doctor Who." He has also appeared on stage in Our Boys, Dr. Faustus, Swimming with Sharks, Marine Parade, Stacy and Terre Haute. He will take on the role of Guy.

Christie, who steps into the role of Girl, co-starred with Daniel Radcliffe in the West End revival of Equus. She has appeared in "Mr. Selfridge" as well as The Ramshackle Heart and One Night In November.

The roles were originated on Broadway by Steve Kazee and Cristin Milioti, respectively. Ben Hope and Laura Dreyfuss most recently played the roles in the Broadway production.

Once is directed by John Tiffany ( Black Watch), with movement by Steven Hoggett ( Black Watch, American Idiot) and music supervision and orchestrations by Martin Lowe ( Mamma Mia!). It won eight Tony Awards including Best Musical.

The production has set and costume design by Tony Award winner Bob Crowley ( The Coast of Utopia, Mary Poppins). Lighting design is by Tony winner Natasha Katz ( Aida, The Coast of Utopia), and sound design is by Clive Goodwin.

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