Fireworks light up the sky for one of Sonoma County premier Fourth of July celebrations! GMC Summer 2017 programming starts off with a bang as Grammy Winner Kathy Mattea, along with the Santa Rosa Symphony, takes the stage. Families – make sure to arrive early and check out our lawn festival beginning at 4:30 p.m., complete with carnival games, bounce houses and face painting, as well as food, music and more!