Sir Paul McCartney has described his experience of coming face to face with God, an entity he says looked like "a massive wall".
The 76-year-old singer, who will be touring with new music later this year, admitted the experience was one that had an impact on his life.
Speaking to the Sunday Times, the rocker said: "I once took a drug, DMT. There was the gallery owner Robert Fraser, me, a couple of others. We were immediately nailed to the sofa. And I saw God, this amazing towering thing, and I was humbled.
He went on to describe God as "huge" and like "a massive wall that I couldn't see the top of, and I was at the bottom… We felt we had seen a higher thing".
Dimethyltryptamine – known as DMT – is a hallucinogenic drug which occurs naturally in plants and animals, including humans.
Usually smoked or injected, the drug causes intense and abstract "trips", with many users reporting almost out of body experiences.
Talking about this vision of God as "a clue", he went on to describe a "thrilling" moment which later occurred following the death of his first wife, photographer and activist Linda.
While grieving, he spent time in the country, where he saw a white squirrel which he believes was "Linda, come back to give me a sign".
Touching on his musical career of over 60 years, the singer said he once gave Stormzy an impromptu music lesson, with the help of a piano.
McCartney said he knew the rapper would already be a master of words, so decided to "show him basic stuff – how you get middle C, make a chord, a triad and, just by moving that, get D minor, E minor, F, G, A minor, and how that's enough for anyone".
More from Paul McCartney
Egypt Station – McCartney's 17th solo studio album – is released on 7 September.
The concept album will be followed by a world tour, kicking off in Canada on 17 September, before heading on to the US, Japan, Denmark and Europe.