Sir Mick Jagger has been writing "a lot" for the Rolling Stones.
The Brown Sugar singer revealed he and the band's drummer Charlie Watts recently had a "really good time" performing some of the latest tracks he's penned.
He said: "I have been writing a lot for the Stones. I mean, when I write, I go, 'Yeah, that could be a good Stones tune' or, 'That's not really going to work for that'.
"I did some sessions with Charlie recently where I just played some songs I'd written, and of course I wrote more when he was there.
"I'd start making them up, so that was good fun, so we had a really good time doing that."
The band are set to celebrate their 50th anniversary next year and Mick admitted they are in discussions about some concert dates or even doing a tour.
He explained to The Times: "Well, we're talking about it but I don't know if it's going to happen.
"Listen, you could do anything you want if you put your mind to it. I don't know what's going to happen next year. We'll see."
However, he revealed the band do not see a lot of guitarist Keith Richards - who infamously claimed Mick had a "tiny todger" in his autobiography Life last year - because he lives in the US.
He added: "Well, I really don't see much of him. The rest of us are all here [in London] quite a lot, and although he comes here occasionally in the summer, I don't think any of us sees him much. He lives in suburban Connecticut."