Watch: Led Zeppelin's Robert Plant performs 'Immigrant Song' for first time in over 20 years

During his set at Summer Solstice Festival in Iceland last month, Robert Plant played part of the seminal Led Zeppelin III track 'Immigrant Song', after performing 'Ramble On'.

This is reported to be the first time that Plant has performed the song since the a 1996 concert with Jimmy Page.

Plant drops 'Immigrant Song' into the mix at the 5 minute 40 second mark, and shows that he's still somewhat able to do justice to those powerful opening howls.

At the end of the performance, Plant pays tribute to the Icelandic culture which inspired 'Immigrant Song'. He can be heard saying: "Thank you, and thanks to your culture - way back - for the inspiration," as he departed from the stage.

Listen to the performance here:

'Immigrant Song' was written by Jimmy Page and Robert Plant when Led Zeppelin first toured Iceland in the summer of 1970.

“We went to Iceland, and it made you think of Vikings and big ships,” Plant said, speaking about the song in 1970. “And bang, there it was –‘ Immigrant Song!’”

The song was a regular part of their live show for a couple of years, but they dropped it from their setlists in January 1973 and never played it again as a band.