220px-jeffair#9 – Jefferson Airplane – “Somebody to Love” – (1967)

This, possibly the signature song of Jefferson Airplane, was originally recorded by The Great Society, Grace Slick’s band immediately prior to this one and was written by her brother-in-law. It ended up in the top five on the Hot 100 and might be the defining song of the acid rock scene that developed in San Francisco in the late 1960s.