Auditions for the Fredericksburg Theater Company’s summer musical, “The Wizard of Oz,” will be held at 6 p.m. Sunday, March 17, and Monday, March 18, at the Stephen W. Shepherd Theater, 1668 U.S. 87 South in Fredericksburg. Auditioners should prepare a one-minute selection of a song from a classic Broadway show (e.g., “The Sound of Music,” “My Fair Lady,” “South Pacific”) or from “The Wizard of Oz” itself.