The Complete Led Zeppelin collects the eight studio albums the foursome released between 1969-79, plus the posthumous ninth and final studio album Coda, released in 1982, after the death of drummer John Bonham. This is the core of ‘70s classic rock that travels far beyond the definition. While Led Zeppelin were clearly among the early progenitors of ‘Heavy Metal,’ back when it was considered to be loud, blues-based music, they hardly stayed in one place long enough to be defined as anything other than Led Zeppelin. They mastered hard rock with their lead-off track “Good Times, Bad Times” and nailed British folk on III and “The Battle Of Evermore”. IV became their centrepiece, every song a classic, with “Stairway to Heaven” serving as their national anthem. Houses of the Holy and Presence emphasised their ability to groove, while their double-album Physical Graffiti was the prototypical sprawling double album that all major rock artists tried once. In Through the Out Door explored synthesizers and featured everything from epic Zeppelin to old school rock ’n’ roll and the heartbreaking “All My Love”.