Complex sentence: In addition to concerts on campus, each spring the jazz ensembles usually hold a concert at Yoshi's nightclub in Oakland and all the other groups perform together at the Dean Lesher Regional Center for the Arts in downtown Walnut Creek.
Split into simpler sentences: In addition to concerts on campus, each spring the jazz ensembles usually hold a concert at Yoshi's nightclub in Oakland. All the other groups perform together at the Dean Lesher Regional Center for the Arts in downtown Walnut Creek.