Born in 1942, his musical talents began to develop at age 3, and at age 15, he recorded the single "Pony Tail Partner" under the name Bing Day at Federal Records (1957). Day recorded several singles over the next ten years as 'Bing Day' and, also, 'Ford Hopkins'.
He moved to Los Angeles, California, in 1965 and began a career as one of the most listened to "unknown" artists in rock and roll. He immediately became bassist with Johnny Rivers' Band. It was Chuck who came up with "The Riff" in "Secret Agent Man".
During the '70s and '80s Chuck played on numerous recordings including Shel Silverstein's "Freaker's Ball". He also wrote for the soundtrack of Fritz the Cat and performed with legendary musicians Luther Tucker and Merl Saunders.
He eventually formed his own band in 1986.
Chuck Day resided in Fairfax, California beginning in 1969 and continued to play locally in the Marin County area until he was taken ill in January 2007. After three months of care at Marin General Hospital, Chuck was admitted to Santa Rosa Memorial Hospital before being relocated to District Hospital in Healdsburg, where he remained until his death on March 10, 2008.
A memorial and parade was held in Fairfax for Chuck at 4pm on March 22, 2008. The memorial procession began in the parking lot of 19 Broadway, proceeded through downtown Fairfax with a marching band and several hundred parade members singing When the Saints Go Marching In, and gathered in the town center park, before continuing back to 19 Broadway singing You Are My Sunshine and detouring through one of Chuck's favorite watering holes, Peri's Silver Dollar. Following the parade was a musical celebration of Chuck's life, including many local musicians who had played with Chuck, and featuring many of the songs Chuck indelibly etched in his fans' memories.