Andrew Block, 16, a junior at Davis High School, sings “The Lazy Song” by Bruno Mars in rehearsal for Friday’s and Saturday’s preliminary Davis High Idol competition. The prelims start at 7 p.m. in the Brunelle Performance Hall at DHS, 315 W. 14th St., with the top 10 contestants advancing to the finals on Saturday, Jan. 28. Tickets are $6 for the semifinals, $10 for the finals or $20 for all three nights, available at Watermelon Music, 207 E St. Tickets at the door will be $8 and $12. The winner will receive a $200 cash prize and another competitor will win the title of People’s Choice and a $50 cash prize. The annual competition is a fundraiser for the DHS Advanced Treble Choir, which will use the proceeds to cover costs for the choir’s trip to Los Angeles in March.