Oh, Bruno, you always know how to woo us.

During a recent performance at the BBC Live Lounge, the "Locked Out of Heaven" singer unlocked the Disney vault and pulled out "Part of Your World," from The Little Mermaid.

"It's the best song ever written," Mars says, adding that he can never get through it without choking up. (All together now: "awww.")

Watch the video below to see if Mars is able to suppress the waterworks for the underwater ballad. And catch a bonus Little Mermaid track at the end of the clip:

And for comparison, here's the original:

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