Quicksilver Messenger Service

Quicksilver Messenger Service is an American psychedelic rock band, formed in 1965 in San Francisco. Of all the bands that came out of the San Francisco area during the late 60s, Quicksilver Messenger Service typified the style, attitude and sound of that era. Dogged by early personnel changes, the original band in 1964 comprised of vocalist Dino Valenti, guitarist John Cipollina, David Freiberg on bass and vocals, Jim Murray on vocals and harmonica, and drummer Casey Sonoban. Alexander 'Skip' Spence also spent a brief time with the band, before being whisked off to join Jefferson Airplane as their drummer.

Significant in Quicksilver's development was the almost immediate arrest and imprisonment of Valenti for a drugs offence. He did not rejoin the band until late 1969. In 1965, the line-up was strengthened by the arrival of guitarist Gary Duncan and, replacing Sonoban, Greg Elmore.