EXCLUSIVE: John Legend Gushes Over Chrissy Teigen's Singing Chops, But Jokes Luna Is 'Terrible' at the Piano

The couple engaged in a hilarious interview with ET on the Oscars red carpet!

Another red carpet, another chance for John Legend and Chrissy Teigen to slay!

The gorgeous couple stepped out on Sunday for the 2017 Oscars, where Legend will perform on behalf of his Best Picture-nominated film, La La Land. And though the pair's daughter, 10-month-old Luna, will not be on hand for the festivities, she did help her dad rehearse earlier this week.

"It's terrible," Legend joked to ET when asked about Luna's piano-playing skills. "She's not good at it."

"But I'm so happy that she seems to spark up when music is on, so that's a start," he added. "And then we'll teach her to play it at some point later, hopefully."

WATCH: John Legend Gets Some Help From Daughter Luna While Preparing for Oscars Performance 

But according to the 10-time GRAMMY winner, Luna has musical genes coming from both sides of her family. Apparently, Teigen has singing chops!

"Her mommy is actually quite musical. People don't know that," he confessed. "She can sing better than you think. This is my honest opinion."

Legend and Teigen did previously collaborate on a holiday ad for Target, in which the Sports Illustrated model both sang and rapped. "Who knows what the future brings?" Legend mused about a potential full-length duet, while Teigen playfully urged him to "stop talking about it!"

Teigen still couldn't help but show off her skills (as only she could) during ET's interview -- see for yourself in the hilarious video above.

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Meanwhile, her husband couldn't seem to stop stepping on the train of her show-stopping Zuhair Murad gown.

"This dress will be stepped on at least 30 times tonight," he said. "It just might fall apart."

"Oh, it's been 11 years! I'm very used to it," Teigen quipped.

"Every Oscars, I step on her dress," he continued. "Every train she's had, I've stepped on."

WATCH: Oscars 2017 Cheat Sheet: Everything You Need to Know!