Led Zeppelin remains one of the most revered rock bands ever to hit the world stage. Central figures in the decadent rock scene of the 1970s and '80s, they paved the way for some of the most influential bands of the era. From their blues-inspired debut, through their exploration of folk roots and British mythology, to the progressive rock of the early '70s and the stadium-arena heavy metal of the late '70s, their nine albums chronicle 12 years at the top.