The 2013 Mountain Play “The Sound of Music” opened on May 19, marking the event’s 100th anniversary. The Mountain Play Association, which has put on the outdoor theater experience annually since 1913, is a nonprofit organization that coordinates the event.

The play is performed in an outdoor theater built part way up on Mt. Tam, and audience members are encouraged to take buses or hike to the venue where they can lay down blankets and picnic. This year, the play spans six Saturdays and runs until June 16.

“I thoroughly enjoyed the Mountain Play,” sophomore Emily Oreste said. “‘The Sound of Music’ was the perfect choice for the 100th anniversary show.”