Enjoy a warm noon Sunday in Sharon Meadow at Golden Gate Park for "Summerthing," a free concert by [email protected] radio station featuring 3 talented singers/songwriters from England - Ed Sheeran, New Zealand - Ginny Blackmore, and the U.S. - Sara Bareilles with opening by fresh local talent from Alameda, Finish Ticket.  Click for more Summerthing 2013 info.