One of two Davenport North High School show choir teams, Center Stage, performs Saturday at the Great River Show Choir Invitational at the Adler Theatre, 136 E. 3rd St., Davenport. The show included 30 middle school and high school show choirs from Iowa and Wisconsin. It opened Friday and continued all day Saturday, with the finals Saturday night. Proceeds benefited the show choirs at Davenport Central and West high schools.