John Legend's daughter Luna is "interested" in music.

Chrissy Teigen and John Legend

Chrissy Teigen and John Legend

The 'All of Me' hitmaker has high hopes that his 20-month-old daughter could follow in her father's footsteps into the music industry one day as she loves the piano.

He said: "She's interested, for sure. She likes to piano with me and play. You know, who knows what that will develop into."

And John is thrilled to be expecting another child with his wife Chrissy Teigen and likes the "focus" pregnancy gives them.

He added to People magazine: "She knows mommy has a baby inside. She says 'baby'.

"Chrissy enjoys being pregnant overall, it helps us focus. We're trying to bring this new baby to life. And to get it ready for the world. [I want to] make sure she's [Chrissy's] ready."

Meanwhile, John previously admitted parenting has been a "whole new challenge" for him and wife Chrissy.

He explained: "Being parents is the biggest difference. Going from dating to engaged to married - there's some difference. But bringing a new life into the world and parenting together is a whole new challenge.

"It's a whole new joy as well. It alters your life in a way that is very different than any other milestone. I think it's the most strengthening that you can go through, though, because it's a challenge and because you have to do it together and help each other, if you're doing it right. It builds a stronger bond that you wouldn't have otherwise."