The Yardbirds are mostly known as the starting point for three of the greatest British rock guitarists: Eric Clapton, Jeff Beck, and Jimmy Page. Undoubtedly they did much to shape the group's sound, but throughout their career, The Yardbirds were very much a singular unit. They were truly one of the great rock bands; one whose contributions went far beyond the scope of their half dozen or so mid-'60s hits ("For Your Love," "Heart Full of Soul," "Shapes of Things," "I'm a Man," "Over Under Sideways Down," "Happenings Ten Years Time Ago"). Not content to limit themselves to the R&B and blues covers, they quickly branched out into experimental pop/rock. The innovations of Clapton, Beck, and Page redefined the role of the guitar in rock music, breaking  ground in the use of feedback, distortion, and amplification with  breathtaking virtuosity. With the exception of the Byrds, they did more than any other group to pioneer psychedelia, with an approach that laid the groundwork for much of the hard rock and progressive rock from the late '60s to the present.