Madonna has spoken about her experiences working with Kanye West, saying he "drove her bonkers".
Madonna collaborated with the rapper on her forthcoming album Rebel Heart.
Speaking to Rolling Stone magazine, she said: "He's a brilliant madman. He can't help himself. Like, he doesn't have the same filters other people have. He has to blurt things out - he's always saying inappropriate stuff.
"But he also has brilliant ideas, if you can get him to pay attention long enough, working with him in the studio. He would come and go.
"He would drive me bonkers, because he's got so many things going on in his life. And this seemed to be the theme of my record, working with people who can't get off their phone, can't stop tweeting, can't focus and finish a song. It drove me crazy.
"But when they did pay attention, it was brilliant. I was, like, running around with a butterfly net. But I feel like the music business needs him, because everyone's become so politically correct, so safe.
"I don't always agree with the things he says or does - I don't always like his music, even. But he's a beautiful mess. I love him."