Foo Fighters rocker Dave Grohl has admitted that working with The Beatles legend Sir Paul McCartney was a fantastic experience because he's such a fantastic guy.

Grohl collaborated with the 'Blackbird' icon along with the remaining members of Nirvana on a track entitled 'Cut Me Some Slack', which they wrote together in just a few hours, and speaking to KROQ he described McCartney as "just the sweetest, nicest, most awesome person".

He also opened up about their working relationship and explained that it was an easy partnership that felt natural as it just happened and "came out of nowhere":

"We walked in, we jammed the song. It just came out of nowhere. The best songs happen that way. We recorded it live and put a vocal over it and that was it. It was three hours and it was perfect. One of the great things about playing with Paul McCartney is that that generation of musicians, they cherish and respect and value the practice of just going into a room and coming up with something and jamming and making it a song."

"There's not like seven songwriters and seven producers and digital technology or whatever. It's like people getting in a room."

Listen to 'Cut Me Some Slack' below: