The centerpiece for the third Arianna String Quartet concert this season will be the world premiere of David Stock’s Quartet No. 9. Stock wrote the work for the Arianna, the resident quartet at the University of Missouri–St. Louis. The composition will be performed during the concert “Arianna String Quartet: World Premiere” at 8 p.m. March 2 at the Blanche M. Touhill Performing Arts Center at UMSL.