Waldo Music Fest is this Saturday, September 10, 2011 from 3 pm to 8 pm. 3536 Rainier Avenue, Stockton. Waldo Music Fest is a fun-filled outdoor gathering of music on the banks of the Calaveras River. Your $20 includes music, food, drinks, a silent auction. Kids admitted free with an adult. Profits got toward protecting wilderness in San Joaquin County.