Duke University’s resident foursome, the Ciompi Quartet, adds guest players Nicholas Kitchen (violin) and Yeesun Kim (cello) for a concert Saturday in Baldwin Auditorium. Works include Shostakovitch’s String Quartet No. 2, Brahms’ Sextet and the premiere of Kitchen’s transcription for string sextet of Bach’s Prelude and Fugue in G Major (“St. Anne”). 8 p.m. $25 (all students $10). 919-684-4444 or dukeperformances.duke.edu.