Quicksilver Messenger Service

Quicksilver Messenger Service is an American psychedelic rock band, formed in 1965 in San Francisco and is considered one of the leading acts on the city's psychedelic scene in the mid-to-late 1960s. Essentially a jam band, Quicksilver Messenger Service gained wide popularity in the Bay Area and with psychedelic rock enthusiasts around the globe. Many of their albums ranked in the top 30 of the Billboard Pop charts. Though not ultimately as commercially successful as their contemporaries Jefferson Airplane and The Grateful Dead, the band was integral to the beginnings of their genre. With their jazz and classical influences, as well as a strong folk background, the band attempted to create a sound that was individual and innovative. Member Dino Valente drew heavily on musical influences he picked up during the folk revival of his formative musical years. The style he developed from these sources is evident in Quicksilver Messenger Service's swung rhythms and twanging guitar sounds. After many years, the band has attempted to reform despite the deaths of several members. Recently, original members Gary Duncan and David Freiberg have been touring as the Quicksilver Messenger Service, using different musicians to back them up.

From Wikipedia