Performances of “Mamma Mia” are set for 7 p.m. Friday, April 14, and Saturday, April 15, and 2 p.m. Sunday, April 16, in the Howell High School Rod Bushey Performing Arts Center. Tickets are $12 for adults and $10 for students and seniors, and can be purchased by clicking here. … Continue reading Meet the cast of “Mamma Mia”: Haley Matta