| STYLE |
Archetypal heavy metal, complete with American blues, British folk, and flower power.
"Stairway to Heaven," "Black Dog"
OTHER TOP-100 RIAA ALBUMS
Physical Graffiti (1975; 15 million sold), Led Zeppelin II (1969; 12 million sold), Houses of the Holy (1973; 11 million sold)
To rock musicians and the world at large, a hard-rock monument-its peaks and depths disappearing into the clouds and Middle Earth respectively. To gullible Christians, an urban legend-its lyrics allegedly unmasked as Satanic when played backwards.