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Recently, Bruno Mars opened up on the Cubby & Carolina Bermudez In The Morning radio show to talk about working with Adele on “All I Ask,” saying that his first impression of her was less than stellar but that he still wants to work with her.

“She’s incredible,” Mars said. “There was a moment when she was singing in the booth, and I’m not exaggerating at all and the water was vibrating…like you know that scene in Jurassic Park. She’s got some pipes on her, and she’s just a superstar.”

But, he said, she also was very picky.

— Adele says she cried all day after cringe-worthy Grammy performance — 

“She walks into the studio, she’s got all this attitude, she’s a diva, she’s like, ‘I don’t want to do this. I don’t like that,’” he said. “And then as soon as we hit a couple chords that she liked, we started rolling, and that’s where we got that song from.”

Despite the bad first impression, though, Mars wants to work with her again.

“I don’t know what she’s waiting on, man. I’m like come on Adele, like, send an email, let me know!” he said.