Victor Jara was a mid-20th century Chilean director, poet, singer-songwriter, and activist. He was a mentor and inspiration to Celso Garrido-Lecca, whose String Quartet No. 2 is being performed by the Apple Hill String Quartet this winter. When Pinochet seized power in 1973, Jara was arrested, tortured, and shot. His voice lives on in Lecca’s quartet, which was dedicated to Jara, and in many recordings of his performances. Here’s one.