Batman is in the house to play a game of Beach Ball Ballyhoo with Elmo. In search of the perfect bedtime story, Elmo welcomes acapella group Pentatonix, who performs a mashup of lullabies. Rosita looks for three sheep so she can tell her favorite sleepy time tale.
| Name | Type | Role | |
|---|---|---|---|
| Pentatonix | Guest Star |