Watch Bruno Mars Cover Adele's 'All I Ask'

Bruno Mars visited BBC Radio 1's Live Lounge on Wednesday, and when it came time to whip out a cover, he crooned Adele's "All I Ask."

Mars co-wrote the track with the British mega-star for her third album, 25. With his XXIV cap, gold chains and Hooligans band, Mars gave "All I Ask" a sparkling rendition, hoisting everything he had to his vocals.