"Jessica Simpson: "I think people are ready to hear something that Madonna used to do. We all need to hear that every now and again. It wasn't a sample or something I meant to do, but she did influence me and still does today. I hope to have the longevity of her career."."

"Taylor Momsen:"

"David Foster:"

"Matthew Bellamy: "Ambition - whenever I hear the word, in my head, all I can think of is Madonna, for some reason. Very ambitious person and a great artist, certainly explores many avenues to get her name out there. I think she’s a very special lady.""

"Carole King: "I think Madonna has a great deal of intelligence and capability. I have a lot of respect for her. She's taken her career and maximized it with intelligence and creativity." ."

"Bette Midler: "She has pulled herself up by her own bra-straps... and has been known to let them down occasionally"."

"Craig David: "Madonna is still sexy and cool. She’s had such an amazing career and has always been able to re-invent herself time and time again, and it’d be fascinating to chat to her about that over a couple of drinks.""

"Jason Derulo:"

"Marina Diamandis:"

"Randy Newman: "I once had dinner with Madonna and I wasn't nervous but within about a minute I found myself talking about underwear." ."

"Katy Perry:"

"Simon Cowell:"

"Belinda Carlisle:"

"Kim Wilde: "I had the top of the charts two years before Madonna came on the scene and stole my thunder. I remember seeing her and thinking, 'Here's trouble'! I'd be lying if I said it didn't get to me, but I never disliked her. And I look at her now and think she's amazing. When I started doing yoga, I was inspired to look after my body. Now I love going for long walks, eating healthily and working out with a trainer.""

"Randy Jackson: "Madonna knows the business and her art better than anyone.""

"Tracy Chapman: "I was trying to make a case for Madonna the other day, saying that she's to be admired for her longevity in a genre that has mostly been for younger acts. Men are able to sustain a career into their 50s and 60s and still present themselves as sex symbols. With women on the other hand, people say, 'Why doesn't she retire?' It's just so unfair. So I have to give props to Madonna.""

"Adam Lambert:"

"Eric West: "A lot of people make her out to be arrogant, and not fan friendly, but I can say otherwise, for such a superstar, she makes you feel as if you’re talking to an old friend.""

"Danja: "She was cool. She had a dark sense of humor that I can’t explain. She might just say something crazy that you might feel is out of line. But it’s not. It’s just her sense of humor. She was in the studio chilling with us, being open and the whole nine." ."

"Pharrell: "She's a little baby tiger cub on the inside but outside she's as tough as anything. Once you are fighting with her you can't let your guard down, she'd beat your ass to a pulp. She could definetely beat me up. But you know, making Madonna cry has just cemented our relationship. We're tight now. Seriously tight. She's probably the best person I've ever collaborated with." (Manchester Free Magazine)"

"Ashanti: "Yeah, Madonna is ill. All the clamps and chains people had on what women can and cannot do — she just broke them. And I really wasn’t up on Madonna until my cousin — who’s six years older than me and my favorite relative on the planet; we’re more like sisters — when I was eight or nine I said, ‘Why you got these posters of that white lady all over your room?’ She's like, ‘This is Madonna!’""

"Ciara: "She's a tough lady! She's a megastar, and that [media scrutiny] goes with the territory, But she's definitely put her foot down as a woman over the years and she's proven to be one of the best to me.""

"You don't produce Madonna, you collaborate with her. She's a really good producer herself and obviously a great writer too. I've never worked with anyone before who is as genuine and as hands on as an artist as Madonna is. She's has her vision and knows how to get it. What's interesting with this one is that she's picked a DJ to make dance tunes for her to make songs, which is exactly what she's been doing since 1983 - hanging out with DJ's and making records."

"Stuart Price:"

"Mika: "Believe me, if I got asked to work with her, I certainly wouldn’t turn it down. Of all the women I’m fascinated by, she’s certainly up there.""

"Donna De Lory:"

"Gwen Stefani:"

"Fergie: "Oh MADONNA! You know, I saw her after her concert and I wanted to give her some positive words but I didn't want to talk too much to her because I understand what it feels like after a show when there's a lot of people in the room who want to see you. I wanted to give her some kind words but I didn't want to take up her time. I really wanted to ask her some more questions but I doubt it would have been as exciting for her as it was for me! But if I ever got the chance to sit down with her I think I'd want to ask her some advice questions and I would love to collaborate with her. That would be amazing.""

"Ludacris: "Madonna was so low key and so incognito that I hardly noticed her, and when I did it kinda caught me by storm. But honestly speaking, she's a really down to earth, really cool individual. I'm glad I got a chance to meet her – rub some of that energy off!""

"Annie Lennox: "Lo and behold, Madonna's track came back and she'd sung the second verse, which was a huge bonus. I was really touched - for Madonna is very rigorous in what she gets involved in and for her to do that for me, I was thrilled to bits." ."

"Natasha Bedingfield: "I have so much respect for Madonna after learning how hard it is to sing ["Ray of Light"]. She has an amazing voice - the range you need to sing the song is incredible.""

"Pat Boone: "[Madonna's] a talented tart.""

"Stephen Malkmus: "She doesn't seem to run out of ideas, does she. I used to love her when I was 14 or so. I had a regular crush on her. I couldn't swear if it was her music that fascinated me, or the generous cleavage. But yeah, she was hot." ."

"Kim Gordon: "She's strong, beautiful and a manipulator. Qualities which makes her to write great songs.""

"Dave Grohl: "...It could be Madonna, if she wants to come do a couple of shots of Jagermeister with her friend Dave she's more than welcome to come into the room and I'll pour her some chilli shots of whisky, it'll be great!""

"Fran Healy: "I had a massive crush on Madonna when I was a kid, I mean it was huge. It was worrying. I just thought she was amazing.""

"Pet Shop Boys: "Madonna always looks ahead, both for looks and sounds, just like we do.""

"Steve Bray: "If people feel exploited by Madonna - that's resentment of someone who's got drive. It seems like you're leaving people behind or you're stepping on them, and the fact is you're moving and they're not... Madonna doesn't care if she ruffles someone's feathers.""

"Peter Hook: "Madonna's like a Black Widow spider. She tends to use people, then they shrivel up and disappear. She sat there with her back to us, and Rob went up and said, 'We were wondering if you wanted to appear later at the club', and she just went, 'Fuck off.'""

"Don McLean: "Madonna is a colossus in the music industry and she is going to be considered an important historical figure as well. She is a fine singer, a fine songwriter and record producer, and she has the power to guarantee success with any song she chooses to record. It is a gift for her to have recorded 'American Pie.'I have heard her version and I think it is sensual and mystical. I also feel that she's chosen autobiographical verses that reflect her career and personal history. I hope it will cause people to ask what's happening to music in America. I have received many gifts from God but this is the first time I have ever received a gift from a goddess.""

"Tom Meighan: "Ooh, Madonna’s thighs! She reminds me of my old dance teacher, who I used to have a crush on. Who didn’t have a huge crush on Madonna when they were a kid? "I’d marry her. If she came for me, I really would.""

"Marc Almond: "It was a hell-hole. There were prostitutes upstairs, junkies downstairs and it was a bare room with a bed, nylon sheets, and a kitchenette with dirty plates and a lamp. I’ve always felt ashamed she stayed in such a pit. If I’d known in 1983 how big she’d become, I'd have cut up the sheets and sold them on ebay.""

"Eugene Hutz:"

"Susanna Hoffs: "I think she's really great. I respect and admire her and think she's really talented." (From the book "Madonna talking" by Mick St. Michael)."

"Sophie Ellis-Bextor:"

"Damon Gough:"

"Christophe Willem: "In music, the one who has reached the tops, it's Madonna.""

"Timbaland: "Madonna's a funky lady, she's up for everything." ."

"Kylie Minogue: "Madonna's the Queen of Pop, I'm the princess. I'm quite happy with that.""

"Cher: "She could afford to be a little more magnanimous and a little less of a cunt.""