Chuck Berry is perhaps the defining musician of the early rock & roll era, the one figure responsible for the music's sound, style, and sensibility that created the blueprint for the generations that followed. A guitarist who wanted to play like T-Bone Walker and croon like Nat King Cole, Berry married these two styles to a swinging beat that spliced jump blues with juke joint R&B and hillbilly boogie -- a blend that arrived nearly fully realized with his 1955 debut single "Maybellene," a record that topped the R&B charts and crashed into the pop Top Ten. Berry quickly followe...