Behind the Jonas Brothers' World Tour 2009

The stage is a tiered in-the-round setup joined to two smaller satellite performance areas by catwalks on either end. Hanging over the entire thing is an LED screen that looks like an upside-down wedding cake produced by Skynet after the fall of humanity. That doesn't even take into account the 350 lighting units and the never-before-used water feature that's coming on the road, too.

"Putting this show together is so much different than anything we've ever done before," Nick says. "You really have to think about all the ground you have to cover. We tried to add some musicians, some horn players and some string players, just to fill in the space, and fill in the sound as well."

The additions of a four-piece horn section went further than just filling in space, the brothers say; it began changing the sound, something that had already started to happen during the recording of Lines, Vines and Trying Times (out June 16th). With new influences and inspirations like Neil Diamond and the Zutons — known here more for an iPod commercial than anything else — taking root. Some of that new sound can be heard on "Much Better," which everyone involved, from brothers to crew members, points to as a highlight of the new production.

"It's like a dance party onstage," Joe says. I think everybody will be able to see that once they come to see the show."

Other than that, the band and their crew are staying pretty close-mouthed about what will happen, referring to "gags" and "reveals" throughout the show, but declining to explain in much detail. (One spoiler: expect pyrotechnics on new song "Fly With Me.")

"We really tried to step it up this time," Kevin says. "You might have to come more than once to see it all because you might not catch it all."

We know of at least two girls who probably will.