Anna Schmackers portrays Fiona in Celina High School's production of "Shrek the Musical." The actors rehearsed their roles Tuesday evening. Performances of "Shrek the Musical" will be 7 p.m. Thursday and April 10, 8 p.m. Friday and Saturday and April 11-12, and 3 p.m. Sunday and April 13 at the Celina Education Complex Auditorium.