Stapleton joined several Muppets to sing a song titled "You've Got a Friend in Music" on a new episode of Sesame Street.

For a 3 1/2-year-old, Elmo sure has sung a lot on “Sesame Street” with some of the best musicians in the world.

Kacey Musgraves returned to 'Sesame Street' on Thursday’s episode to join the monsters in a song about "All the Colors of the World." ...