As we await the arrival of their new full-length Two Faces and a Vase later this summer, My Son Bison rolls into Boot & Saddle this evening. The band merges the comforting familiarity of folk with intricate baroque developments. That common starting point, with whimsical levels of instrumentation, provide an adventurous experimental bridge in which diving into the depths exposes illumination rather than the weight of carrying additional musical baggage. Tonight, they set the stage for New York-based trio City of the Sun, who embark on acoustic-based journeys, pulling listeners into a whirlwind whose origins are as diverse as the path they forge. Boot & Saddle, 1131 S. Broad St., 8:30pm, $10, 21 + – Michael Colavita