The Jupiter String Quartet is often described as a “young and award-winning group.” For the upcoming Jupiter String Quartet with James Dunham concert, they’re also generous as they welcome another musician onstage. The members of most quartets are, by necessity, exceedingly close (they spend long hours rehearsing, traveling and performing together). The Jupiter Quartet is probably closer than most; Megan Freivogel, one of the group’s two violinists, is married to Jupiter cellist Daniel McDonough. Her sister, Liz Freivogel, is the group’s violist. Violinist Nelson Lee completes the foursome.

During this performance, violist James Dunham, a faculty member at the Shepherd School of Music, makes the circle of musicians a little bigger when he joins them for Brahms’s String Quintet in G Major, Op. 111 “Prater.” For a close quartet with a difficult repertoire, adding another member, even for one work, requires some adjustments in the way they communicate and perform. Dunham has been frequently working with the Jupiter Quartet for most of the past year. “We’re having a great time,” Dunham tells us. As no doubt will the audience for this concert presented by Chamber Music Houston.

7:30 p.m. Rice University, 6100 Main. For information, call 713‑348‑5400 or visit chambermusichouston.org. $25 to $75.

Tue., Dec. 2, 7:30 p.m., 2014