Ado Annie, played by Payton Frese, sings "I Cain't Say No" during a dress rehearsal for Parkway High School's performance of "Oklahoma" on Tuesday evening. Performances are at 7 p.m. Friday and Saturday and at 2 p.m. Sunday at the high school auditorium. Tickets, available at the door or the high school's website, are $8 for adults and $6 for students.