Although Cream was only together for a little more than two years, their influence was immense, both during their late-'60s peak and in the years following their breakup. Cream was the first top group to truly exploit the power-trio format, in the process laying the foundation for much blues-rock and hard rock of the 1960s and 1970s. It was with Cream, too, that guitarist Eric Clapton truly became an international superstar. Critical revisionists have tagged the band as overrated, citing the musicians' emphasis upon flash, virtuosity, and showmanship at the expense of taste and focus. This was sometimes true of their live shows in particular, but in reality the best of their studio recordings were excellent fusions of blues, pop, and psychedelia, with concise original material outnumbering the bloated blues jams and overlong solos.
Cream could be viewed as the first rock supergroup to become superstars, although none of the three members were that well-known when the band formed in mid-1966. Eric Clapton had the biggest reputation, having established himself as a guitar hero first with the Yardbirds, and then in a more blues-intensive environment with John Mayall's Bluesbreakers. (In the States, however, he was all but unknown, having left the Yardbirds before "For Your Love" made the American Top Ten.)