ST. GEORGE — DaPonte String Quartet performs a live concert, entitled “Dissonant and Dissident,” featuring works by Mozart and Shostakovich Saturday, Sept. 25, at 5 p.m. at Ocean View Grange, 435 Port Clyde Road.

Wolfgang Amadeus Mozart’s String Quartet in C Major K. 465 (“Dissonance”): In 1783, 16 years before Beethoven’s first symphony, Mozart composed a string quartet with an opening section surpassing in harmonic complexity of anything written until Wagner. This piece is a masterful combination of notes — harmonic yet surprising, melodic yet startling.

Dmitry Shostakovich’s String Quartet No. 8: After his diagnosis of amyotrophic lateral sclerosis in 1960, Shostakovich contemplated suicide, and wrote the Eighth String Quartet in only three days (July 12 through 14, 1960), intended as his own epitaph. Less than seven years had elapsed since Stalin’s death in 1953 ended one of the most brutal national terrors ever inflicted. The composer constructs a series of tableaux comprising an almost hysterical denunciation of the Soviet state. Some of the effects Shostakovich uses to paint the pictures are low drone notes, symbolizing electrified fences, or the barking sounds of Alsatian guard dogs against a wildly-scrambling texture evoking the running steps of people fleeing for their lives.

Come hear these two significant works, performed by masters of their instruments, the DaPonte String Quartet. Tickets available at daponte.org.