It's time for a musical adventure! Barney, BJ and Baby Bop have a new dino friend RIFF who knows how to find music everywhere! When a little girl named Melanie dreams of playing her violin in a tlent show, Barney and his friend help her raise her dreams and they discover that some dreams are even bigger than they imagine. So come on everyone Let's Go To The Fair!
| Actor | Role |
|---|---|
| DDean WendtBarney (voice) | Barney (voice) |
 Carey StinsonBarney | Barney |
 Julie JohnsonBaby Bop (voice) | Baby Bop (voice) |
| JJeff AyersBaby Bop | Baby Bop |
| PPatty WirtzBJ (voice) | BJ (voice) |
| KKyle NelsonBJ | BJ |
 Michaela DietzRiff (voice) | Riff (voice) |
| AAdam BrownRiff | Riff |
| KKelly EichenholzMelanie | Melanie |
| SShannon McGrannMom/The Red Queen | Mom/The Red Queen |
 Ron GonzalezDad/Mr. Hatter | Dad/Mr. Hatter |
| MMarco Antonio RodriguezTucker The Ticket Taker | Tucker The Ticket Taker |
 Todd HaberkornMr. Knickerbocker | Mr. Knickerbocker |
| CCharlet DuparMary | Mary |
 Ahmad SimmonsDancer | Dancer |