30/03/2012 04:18 BST

'Hunger Games' Star Lenny Kravitz Reveals How Sir Mick Jagger's Moves Gave Him Best Moment Of His Life

Rock pensioner Sir Mick Jagger has a novel way to ensure he can still wow fans live - he performs karaoke sets of Rolling Stones songs in his spare time.

Fellow rocker Lenny Kravitz has revealed he was once left stunned when Jagger deserted him during dinner, and when he went to look for the star, he found him in a room singing the band's hits by himself.

Kravitz explains: "I was on vacation with Mick Jagger once, several years ago. He was on a world tour. This is what we do. The throat is a muscle. So if you’re touring, you have to build up the strength of your voice. Now all of a sudden if you have a month off and you don’t sing, that first show, you’re gonna not be happening. And you might get hoarse, and it f**ks up the whole next leg of the tour. So you have to keep singing.

"We were having dinner and he said, 'Lenny, excuse me, I’ll be back in about 45 minutes.' So he goes downstairs and all of a sudden I’m hearing Brown Sugar. And I’m hearing Mick. What Mick is doing, because I had to peep, he was dancing around and doing Rolling Stones karaoke to keep his breath up and to keep his voice up so that he would stay up on his off time.

"He had a band tape of Stones with no vocals that they would record at sound check, right? He’s doing Mick Jagger karaoke downstairs, and I’m listening to this. I was like, 'This is the best moment of my life'."