Sir Paul McCartney was joined on stage by Bob Weir last night (17.07.16).
The Beatles legend was playing a show at Fenway Park in Boston when the Grateful Dead singer came on for the encore.
The pair – who were also joined by New England Patriots footballer Rob Gronkowski – did renditions of Wings song ‘Hi Hi Hi’ as well as the Beatles hit ‘Helter Skelter’.
Weir’s Dead & Company had just completed a two-night stand at the famous venue and it’s the first time him and McCartney had ever performed together.
And it seems McCartney is in high demand at the moment.
Earlier this month, James Bay revealed he would love to collaborate with McCartney but would be too scared to ask him.
When asked if he would like to work with McCartney, the ‘Hold Back The River’ hitmaker said: "When you see what he’s done with more current artists like Kanye and Rihanna. I’d be open to discussing it. I suppose I wouldn’t want to predetermine anything because the cool thing about working with someone with such a huge array of musical content from over so many decades is that he could kind of come at you with anything and I’d want to be open to all of that."
And while it would his "dream" collaboration he’s too shy to approach the 74-year-old guitar god.
He added: "I’m not going to have the guts to go to him! I don’t know! I think obviously it would be a total dream, you know, for someone like that to come to me. It’s hard to even think about it as a real thing but dream-wise, it would be amazing."
Paul McCartney sings with Bob Weir
