From their 1969 debut to Untitled aka Led Zeppelin IV, we've definitively ranked every album by rock giants Led Zeppelin.

While Led Zeppelin frontman Robert Plant has always been an exceptional vocalist, it wasn't until later in his career that he began using harmonies more often.

There are some musical acts that just seem like they've always been there. When we listen to their work by streaming or on vinyl or CD or even cassette tape or eight-track, it's hard to imagine when ...