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| Music by | Mark Radice |
| Lyrics by | Christine Ferraro |
| Publisher | Sesame Street Inc. |
"I Wonder Song" is a tune from the 2008 Sesame Street direct-to-video production, Abby in Wonderland.
Abby Cadabby first sings the short song when she falls down a rabbit hole into a strange place, wondering what's behind the lone door found in the area. She sings it again as she manages to pass through it, finding a wonderland on the other side.