Don't settle for mere rocking—get the Led out

Blasting out of the gate with the hard-charging gallop of "Immigrant Song," Led Zeppelin remind us why their name is synonymous with classic hard rock. But the group's lower-voltage third album colours their brand of musical nitroglycerine with down-and-dirty blues riffs on the swaggering "Since I've Been Loving You" and unexpected Celtic folk embellishments on the acoustic masterpiece "Bron-Y-Aur Stomp." By taking it down a notch, Led Zeppelin III sets the bar for rock greatness higher than ever before.