Rolling Stones guitarist Ronnie Wood has to teach Mick Jagger and Keith Richards how to play their own songs - because they often forget them. The 60-year-old musician joined the band in 1976 but insists he is more familiar with the hits than his bandmates. He writes in his new memoir, Ronnie, "Even these days while rehearsing for a tour, Mick or Keith will play something and I'll tell them, 'It doesn't go like that, it goes like this. Come on guys, you wrote the f**king thing," and Keith will shout back, 'Just because I wrote it, that doesn't mean I know it.' So for me, the music was the easiest part of becoming a Rolling Stone."