NOW Ensemble brings an indie-rock attitude to contemporary classical music. Called “fresh and vibrant” (The Classical Review) and praised for its “rhythmic vitality” (Time Out New York), this dynamic ensemble has worked with many leading contemporary composers, including Nico Muhly, Missy Mazzoli, and Timo Andres. Its unique instrumental lineup allows NOW Ensemble to be flexible and innovative, helping it to introduce 21st-century music to new audiences. On this evening’s program, NOW Ensemble presents the New York premiere of Rounder Songs by Patrick Burke and Emily Pinkerton, a five-movement song cycle for voice, clawhammer banjo, flute, clarinet, electric guitar, bass, and piano that blends the sounds of old-time American music with post-minimalist, indie-classical sensibilities.