A full week of premieres

So here's the rest of the story on the Backyardigans season premiere week, according to Nick.com.

Wednesday, Sep. 21: Polka Palace Party
Herman the Worman (from the "Heart of the Jungle" episode) is having a surprise birthday party. Tyrone, Uniqua, Pablo and Austin are musician cowboys who form a band to play at the party. Music: Polka

Thursday, Sep. 22: Cave Party
All five of the Backyardigans are in this episode, about the Valley and Mountain Cave People coming together for a party. Music: Calypso

Friday, Sep. 23: The four new Backyardigans episodes will all be airing one after the other. So don't worry if you miss seeing one earlier in the week!