The resident Philadelphia company extended the run to March 12. The additional eight performances "are a direct response to strong ticket sales and positive audience feedback," according to a Feb. 1 Arden announcement.

Violist turned playwright, Michael Hollinger returns to his first passion with this play, about classical musicians.

"With only a few days to rehearse Beethoven's 'Opus 131,' a world-renowned string quartet struggles to prepare for their highest-profile performance," according to Arden notes. "Their rehearsal room becomes a pressure cooker as passions rise, personalities clash, and the players are forced to confront the ephemeral nature of their life's work."

Opus features two-time Barrymore Award winner, Greg Wood (Death of a Salesman, Daedalus), David Whalen, last seen in Philadelphia Theatre Company's Barrymore Award-winning Take Me Out, Douglas Rees, Patrick McNulty and Erika Cuenca.

Arden artistic director Terrence J. Nolen directs. Ticket prices range from $29 to $45 and may be purchased by calling the Arden Box office at (215) 922-1122, online at www.ardentheatre.org or in person at 40 N. 2nd Street in Old City.

Post-show discussions are scheduled following performances on Feb. 5 at 2 PM, Feb. 15 at 6:30 PM and Feb. 19 at 2 PM.