The Bach Society of Minnesota prides itself on collaborating with some of the top ensembles in the region. Its current collaboration is with the award-winning male vocal ensemble Cantus. With performances coming up this week and next, the Bach Society and Cantus present a program of old-fashioned storytelling with ancient and modern music, “Legends and Lies: The Story of Till Eulenspiegel.”  Steve Staruch speaks with Matthias Maute, the artistic director of the Bach Society of Minnesota, about the concerts, which run April 29 to May 3. Listen now.