"I would imagine many babies were conceived to this album. If you think you're a singer or you want to do a bit of singing, it's a must listen album. Even when he's just scatting the lyrics and singing along to a melody – which is the way he apparently used to write a lot of stuff, by just going to the mic and ad libbing – he's amazing. I'm not very interested in politics as a musician – never have been – but he managed to incorporate what was going on in US politics at that time in a highly poetic way. I got to meet him and perform on a show with him at the Motown 25 concert in 1983. That was Marvin's last performance. I did 'Where Did Our Love Go' and Diana Ross came on stage when I was doing it, which was quite an event. She just danced around me and then went off. There was a knock on my dressing room door before the show and I opened the door and he said, ""Hi I'm Marvin Gaye"" and I said, ""I know you are!"" He just came to say thanks for doing the show. He was a really nice guy. And when I came off the stage, him and Smokey Robinson were waiting for me and they put their arms round me and all that. It was nice to meet him; he was such a gentle soul. Berry Gordy's No 2 was a woman called Suzanne de Passe who was the MD of the company and she'd seen my videos and heard my stuff, and Berry liked it. The theme of the show was 'Yesterday, Today, Forever', and he wanted something that was in the future style. I think I performed with all my heroes and heroines that night. I'd been listening to their songs all my life. I had the unenviable task of following Michael Jackson. He sang 'Billie Jean' and did the moonwalk for the first time. I was ten feet away from him when he did that. It was quite a memorable evening."

"We've been playing The Soft Bulletin live, and you have to consider that chain of events where you make a record but then you have to become the people who play it in front of people. When I saw The Who play live in 1977, that was really a moment that changed music for me; it was no longer music, it was like a deeply religious power to me. They were still doing these songs from Tommy, in a sense like they were on Live At Leeds, where it was just utter chaos, [and] utter release. And even though people would say that at the time that I saw them they weren't at the peak of their powers, they were powerful enough on this night. That was a life-changing, fucking devastating couple of hours of music. I walked out there like I'd changed heads. And it's like that on Live At Leeds. They start to discover that psychic energy: they're feeding off each other's energy, looking at each other, listening to each other, letting that be the reason the songs sounded the way they did. And that's hard to do, to be an intuitive musician - you have to surrender and say yeah, it's like this, and that's a motherfucker, what if it sucks? You have to trust that you have it in you. So when I hear Live At Leeds I'm always reminded that these are young guys, they didn't know that they were playing at their peak, they were just playing what they felt like playing. And the way that the volume goes up, and the way they even lose themselves - the playing is so intense that they even lose the tempo - but they leave that in the record and that's what's music's about. It's not just something that's kept in time, it's people making a racket. Fuck, sometimes it's out of control. There's moments like that on 'Magic Bus' or 'My Generation', moments in those jams that I think are some of the greatest moments of that type of rock & roll. There's that invisible energy guiding them through this. In 1970 you probably had not heard music like that ever.]"

"I had been keeping my eye on Sufjan Stevens for a while. He's always been surprising me and blowing me away. His song 'John Wayne Gacy, Jr.' has one of the best lyrics I have ever heard. On Carrie & Lowell he made an album that has no standout tracks – everything is just remarkable. Sufjan is a maverick and this album is a delicate, fragile piece about the death of his mother who had problems with schizophrenia and alcoholism. The lyrics are beautiful and he sprinkles in some almost Simon & Garfunkel-style harmonies to these folk songs, while others have an almost Sigur Rós element as well. I took my ten-year-old son to see him play. My son had pretty sophisticated tastes. We sat there, holding hands and weeping at the concert. Sufjan drew an incredible performance from that record that was so full of life and death. Sufjan didn't talk for an hour-and-a-half at that gig. It was like watching a sacred ceremony. The lighting and the visuals were the most profound I have ever seen in any concert. Then, after 90 minutes, he talked solidly for ten minutes. He was geeky, gawky and funny. I thought this must have been a pre-prepared speech. He had us belly-laughing. Then, he went back to the ceremony and it was such a bizarre contrast between this vulnerable boy during his talk, to this shaman performing in stillness. The only other rock musician I think can perform in stillness, to that level of profundity, is Leonard Cohen. I went to see that show three times and it changed every night. His talk changed every night, so it wasn't a prepared speech. He would end the show, after playing these beautiful folk songs, with about 15 minutes of noise, worthy of Sigur Rós and a lighting effect, which I can only describe as what I think the soul will look like when I die. It left me shaking and sobbing. It was one of the top five gigs I have ever seen – and I have seen the greats. Sufjan can get you on all levels. I think he will be seen as one of the greats of this generation."