Sir Paul McCartney helped Jack White get over his nerves before playing in front of Barack Obama.
The ex-Beatles singer and songwriter - who was at the White House to collect the US Library of Congress's Gershwin Prize for Popular song earlier this year - decided to sit in on rehearsals before the White Stripes star performed 'Mother Nature's Son' for both him and the US president.
Paul, 68, explained: "There was a rehearsal first of all in the afternoon, and I came in and Jack's standing there, and I could see he was nervous, so I thought actually it would be good for them to have a rehearsal with me sat there.
"Get over the nerves, because it's going to be worse - he's going to be sitting there and Michele and the kids and then all the crowd. But I thought Jack's performance was great, very sensitive."