LIVERMORE — Danú, one of today’s leading traditional Irish ensembles, will bring an enthralling mix of ancient Irish music and new repertoire to the Bankhead Theater on the night before the most Irish of holidays, St. Patrick’s Day. With band members hailing from the historic Counties of Waterford, Cork, Dublin and Donegal, Danú offers the music of their heritage in a performance that has been called, “impressive, immersive and uniquely and unmistakably Irish.” Tickets for the single performance on Friday evening March 16 at 8 p.m. start at $40 with $17 tickets available for students and active military personnel.