The Living For Love hitmaker says the rapper, who was recently criticised for almost storming the stage when Beck won Album of the Year instead of Beyoncé at the Grammy Awards, takes award shows "too seriously" but thinks he is "a brilliant madman."
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 in the studio, if you can get him to pay attention long enough."
While she is a fan of the Only One hitmaker, 37, she doesn't always agree with his infamous rants.
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