For its 10th annual concert, the Tufts University Electronic Music Ensemble presents “Back to the Future: Electronic Music from the ’70s to Today,” an eclectic collection of rock, jazz, classical, and experimental music on electric and electronic instruments. Medford resident Paul Lehrman, Director of Music Engineering at Tufts, leads the ensemble. Free to the public with no tickets required; also viewable via Tufts Music Live Streaming.