[vimeo http://vimeo.com/56081878/ w=600&h=338] Guitarist and composer, Ava Mendoza, is an essential member of the SF Bay Area creative music scene. She is part of a breed, comfortable in a wide variety of situations – playing the yearning rock of Carla Bozulich’s Evangelista, note-y guitar sparring with Nels Cline, or performing a live score to a Buster…