Led Zeppelin’s forays into folk were often as affecting as their totemic rock compositions, as ‘The Battle of Evermore,’ No. 31 on our countdown of the Top 50 Led Zeppelin Songs, demonstrates.

Led Zeppelin recording sessions were closed to other musicians. You didn’t have, say, an inebriated Brian Jones shuffling into the studio to play bad piano on a take. Zeppelin’s quartet was airtight, ...

On the third song from Led Zeppelin’s epic IV, Robert Plant introduces his Queen of Light character, who will become so central for the album’s pièce de résistance, “Stairway To Heaven.” Like ...