John Legend sings baby Luna his own songs

John Legend doesn't do lullabies - he prefers to sing baby Luna Simone his own songs.

The Oscar- and Grammy-winning artist revealed at the opening of the off-Broadway production of Turn Me Loose on Thursday (19May16) that he likes to croon his own tunes as means of getting his newborn daughter off to sleep.

John attended the opening of the play, which the singer and songwriter is producing, at the Westside Theatre in New York City with model wife Chrissy Teigen, who looked stunning in a plunging, split to the hip, black dress, as the couple enjoyed their first night out in New York since becoming parents.

Chrissy and John, who live in Los Angeles, travelled with their bundle of joy, and speaking to Entertainment Tonight, the 37-year-old Ordinary People singer shared daughter Luna is not being treated to the usual nursery time classics.

"I have some new stuff from the next album that I sing to her," smiled the velvet-voiced crooner.

While John appears to enjoy testing out his music on his tiny audience, it appears it might be an improvement on his initial efforts. Wife Chrissy, 30, has joked that some of his attempts at singing lullabies to Luna were "pretty questionable".

"I gotta say though, if you could listen in, some of them are pretty questionable," she laughed to PEOPLE Now.

"He doesn’t really know how to sing to babies … (The) bath time song wasn’t so good, I will say, last night. It was like, ‘You’re taking a bath time.’ Like, there was just no thought into it."

John was in town for the opening of Turn Me Loose, which tells the life story of famed comedian and activist Dick Gregory, portrayed on stage by Scandal star Joe Morton, and as the play's producer revealed he feels "lucky to be a part of it."

"He's an amazing comic but also a tireless activist and has been a part of so many important historical moments in our nation's history and he has a life whose story is worth being told and we wanted to help get it out there," he added.

Turn Me Loose is set to run until 3 July (16) at the Westside Theatre in New York City.