Led Zeppelin performs ‘Good Times Bad Times’ during the Celebration Day concert at London’s O2 Arena on December 10, 2007, with Jimmy Page in sunglasses commanding the stage and carving lightning into every note of his thunderous guitar solo. Trivia: Jimmy Page often built his solos around blues-based pentatonic scales, but he also infused Dorian modes and Eastern scales, which gave songs like “Kashmir” their exotic edge. Page pioneered unusual studio layering, overdubbing multiple guitar tracks