Complex sentence: Their second self-release, "Regional at Best" was released July 8,2011, accompanied by a free CD release show on the grounds of New Albany High School to which hundreds of people showed up.
Split into simpler sentences: Their second self-release, "Regional at Best" was released July 8,2011. In Spring 2011 they played a free CD release show on the grounds of New Albany High School to which hundreds of people showed up.