If hearing the words "Immigrant Song" immediately evokes Robert Plant's iconic howling, you're not alone. Led Zeppelin's 1970 ...

The ultimate clincher for those dipping their feet into the murky word of Led Zeppelin, 'Immigrant Song' from 'Led Zeppelin ...

There are lots of mystical and moving metaphors to be found in Led Zeppelin songs, but when Robert Plant sang about coming from the land of ice and snow in "Immigrant Song," he meant it literally.

Robert Plant may have been able to deliver tender ballads in Led Zeppelin, but this one song was enough to get him choked up ...