Led Zeppelin were a British blues band that combined classic blues with heavy sounds. In the late 60's they made the blueprint of many other bands of this genre. I was introduced to this music in the 70's by older friends and I have to admit that they were the entry to many other music I used to listen to in these days. The band was filled with extraordinary artists on drums, bass, guitar and vocals and stamped this genre. This song is from an a compilation of BBC-sessions and other live appearances from the early 70's showing them at the peak of their music abilities.