Nathan Stoner portrays Shrek and Sam Phares is King Farquad 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.