Bill Austin, Sam Carmichael and Harry Bright, played by Owen Bubp, Corban DuVernay and Ollie Chisholm, point toward each other as they guess who Sophie's father is during a dress rehearsal for "Mamma Mia" at St. Marys Memorial High School on Tuesday evening. Performances are at 7 p.m. on Friday and at 2 p.m. and 7 p.m. on Saturday at the St. Marys Memorial High School Performing Arts Center. Tickets are $6 for students and $10 for adults.