Pint-sized fans are be-bopping to their own beat ... bringing Twist, Kiki, Shout and Marina to their fans. In rehearsal recently, the foursome sounded upbeat about their "Fresh Beat Band" live ...

With that the kids’ group the Fresh Beat Band ... show opened with Twist, Shout, Kiki and Marina performing the theme song from their Nick Jr. show and introducing the band members.

Similarly, I just recently spoke with Kiki of the Fresh Beat ... jacket on. By the end of the show, and the “Another Perfect Day” closer, the faces on the four peeps in the band must ache ...