As adorable as she is, it's hard to believe Luna would ever be hard to work with, but Legend did admit the timing of the shoot happened to work out pretty well.
"We had to catch her while she was in a good mood," he explained. "And she woke up from her nap and had some food."
And while he did note that Luna does have her cries and fits, the singer also revealed that he and Teigen have been told to "assume your next child will not be as good as her, because she's about as good as she can get."
"I named my daughter, Luna, which is literally light and darkness, the moon," he explained. "She was born while the song "Super Fly" by Curtis Mayfield was playing. And the first line of the song is, Darkness of night, with the moon shining bright."
"I was supposed to name this album Darkness and Light, it made perfect sense," Legend added. "This album title kind of picked itself."