The Tony Award-winning musical Once continues its run at the Tulsa Performing Arts Center. Based on the 2007 film Once, about a Dublin street musician and a Czech immigrant cleaning houses and finding friendship and inspiration through music, the musical includes some of the music from the film, including the Academy Award-winning song “Falling Slowly.” Once continues at 101 E. Third St., Tulsa, through Sunday, Jan. 4, before opening Tuesday, Jan. 13, at Oklahoma City Civic Center Music Hall, 201 N. Walker Ave., in Oklahoma City. The play continues on through Jan. 18. Tickets for the Tulsa showing are $20-$75. Tickets for the OKC run are $20-$60. All tickets are available at www.myticketoffice.com.