Along with Philip Lawrence and Christopher Brody Brown, the Grammy winners co-wrote the song "All I Ask" for Adele's album, 25. "She walks into the studio and 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,'" Mars, 31, recalled Tuesday in an interview with KTU 103.5's Cubby & Carolina Bermudez in the Morning. "Then, as soon as we hit a couple chords that she liked, we started rolling—and that's where we got that song from."