The attached video shows that during one of Jennifer's rehearsal breaks, her 11 year old daughter, Emma breaks out in song with a rendition of Alicia Keyes "If I Ain't Got You", accompanied only by piano, while Mama encourages her.
Jennifer also has a son named Max, who is Emma's twin. They are her children from her marriage to Marc Anthony. Obviously, little Emma has inherited the singing gene from both of her talented parents.
I see another star in the making.