Lenk, who also appeared on Broadway in The Miracle Worker, will take over the role of Reza. She will succeed Claire Wellen, who, as planned, was playing the role temporarily.

She joins a cast that includes Arthur Darvill as Guy and Joanna Christie as Girl, with David Abeles, David Patrick Kelly, Jillian Lebling, Katrina Lenk, Eliza Holland Madore, Anne L. Nathan, Lucas Papaelias, Andy Taylor, Carlos Valdes, Erikka Walsh, Paul Whitty and J. Michael Zygo.

Lenk, who starred as Arachne in the high-flying musical Spider-Man, has been seen in Last Dance at York Theatre and Camille at the Bard Summerscape. Her regional credits include Lost Land at the Steppenwolf Theatre; iWitness at the Mark Taper Forum; Elemeno Pea, Cloudlands and Caucasian Chalk Circle at SouthCoast Repertory; and the title role in Lovelace: A Rock Opera, for which she received the L.A. Weekly and Garland Awards.

Once, the Tony and Grammy Award-winning musical based on the 2007 Academy Award-winning film of the same name, opened on Broadway March 18, 2012. The production won eight Tony Awards, including Best Musical.

Once features a book by award-winning Irish playwright and screenwriter Enda Walsh, the Academy Award-winning music and lyrics of Glen Hansard and Markéta Irglová, direction by John Tiffany, movement by Steven Hoggett and music supervision and orchestrations by Martin Lowe. Other members of the creative team include set and costume designer Bob Crowley, lighting designer Natasha Katz and sound designer Clive Goodwin.

According to producers, "Once tells the enchanting tale of a Dublin street musician who's about to give up on his dream when a beautiful young woman takes a sudden interest in his haunting love songs. As the chemistry between them grows, his music soars to powerful new heights... but their unlikely connection turns out to be deeper and more complex than your everyday romance. Emotionally captivating and theatrically breathtaking, Once draws you in from the very first note and never lets go. It's an unforgettable story about going for your dreams and the power of music to connect us all."

Once is now playing in London's West End at the Phoenix Theatre, where it opened April 9 after premiering in Dublin in February 2013. Once will begin a U.S. national tour launched by The Road Company in summer 2013.

Visit OnceMusical.com.