Beatles legend Sir Paul McCartney will front a Nirvana reunion tonight in New York City.

The singer-songwriter is joining forces with remaining band members Dave Grohl and Krist Novoselic to perform a new song at the 12.12.12 Hurricane Sandy benefit concert at Madison Square Garden.

This will be the first time Grohl and Novoselic have graced the stage together in 20 years following the suicide of Kurt Cobain in 1994, and McCartney is excited about the historic event.

The star said he rang Grohl, who asked him to come along to “jam with some mates" in the studio before the collaboration came about.

He told The Sun: “I didn’t really know who they were. They are saying how good it is to be back together. I said ‘Whoa? You guys haven’t played together for all that time?

He added: “And somebody whispered to me ‘That’s Nirvana. You’re Kurt.’ I couldn’t believe it.”