Sir Paul McCartney believes in the ''healing power'' of music.
The Beatles legend insists song has a ''powerful'' effect and even claims to have cured a headache by listening to one of his favourite records.
Speaking on 'The Ronnie Wood Show', he said: ''All it is, its little vibrations reaching your heart. Music, you know, it's only little vibrations, little words and little things, but it has this powerful effect.
''And the healing power of music is serious. I remember I had a mate called Ian James, just my little teenage mate, school mate, and we used to go down the fairs together and things.
''I remember one day I went back to his house and I had a headache, steaming headache, and I thought 'Oh God', but we put on 'All Shook Up' by Elvis. By the time that record had ended I didn't have a headache.''
The 'Get Back' hitmaker also revealed his late bandmate John Lennon's vanity used to cause some amusing mishaps.
He explained: ''He wore horn-rimmed glasses, but any time there was any girls around he'd whip them off, and then he couldn't see a bloody thing, you know, he'd be as blind as a bat.
''One day we were writing together, John and I, it was around Christmas, and he used to come down to me, we'd write in the evening and he'd walk back up to his house, which was like a mile away or something, and he's walking back one night.
''As I say, if there was any possibility of girls around he wouldn't wear the horn-rims. He's walking back, and I saw him the next day, he said, 'Do you know, those people on that corner of Booker Avenue, they're mad!' He said, 'What time was it when I left you last night?' I said, 'I don't know, about 11.30 or something'. He said, 'Yeah, well I went passed their house and they were out, still playing cards in front of their house'. I said, 'I can't believe it'.
''So I go by there later and it's a nativity scene. You know, Mary and Joseph bent over the baby Jesus. I said 'Get your glasses on, man!' ''
'The Ronnie Wood Show' is broadcast on Sky Arts and Absolute Classic Rock. The interview with Paul airs on Absolute Classic Rock on June 29.