A is for Alana, D is for Danielle, E is for Este, and H is for Haim stopping by Sesame Street to sing through the alphabet with Elmo and his friends. The trio of sisters brought their best harmonies ...

"Sesame Street" has been around longer than even "Saturday Night Live," though it is not the cultural institution it once was. If you don't have young children, you might not even be aware that it no ...