Jimmy Page may have pushed rock and roll to its limits with Led Zeppelin, but he considers this pop marvel as the epitome of pushing musical boundaries.
Roger Waters was always looking for something more out of rock, and he knew things were moving in a different direction once the right person took to the stage.
The Beatles will never be topped in the world of music, but Ritchie Blackmore knew when people were reacting to their favourite bands just like the Fab Four.
The Eagles prided themselves on having a variety of influences, but Don Henley thinks that one of the best voices comes from the world of country music.