Jonas Brothers Promise Old And New JoBros Hits On Summer Tour

'I think from the minute you walk in to when the last note is played, it'll be a full night of music,' Kevin teased.

CHICAGO — While the Jonas Brothers will be joined by Demi Lovato and a number of their "Camp Rock 2" pals for their big tour, which kicks off Saturday outside Chicago, the guys want their fans to know that this is still very much a JoBros tour. And fans will get a bonus treat, thanks to all the special guests.

"When you're coming in to see the show, I think from the minute you walk in to when the last note is played, it'll be a full night of music and entertainment," Kevin told MTV News during a break from rehearsals at the First Midland Bank Amphitheatre. "And we have so many friends out on the road and so many things to be able to integrate into our show."

But fans of Jonas hits like "Lovebug" and "SOS" shouldn't fret; the guys have been making sure their own songs are getting plenty of airtime during the show.

"We are doing a Jonas Brothers set, and it's actually a lot," Kevin added. He said fans will even be treated to some oldies but goodies. "We're playing a lot of Jonas Brothers songs, and we're integrating 'Camp Rock' and 'JONAS L.A.' songs [and] songs from our past. We're really excited."

Not only should fans be excited to catch the JoBros and their pals onstage, but the show also means the guys have a lot more friends to hang out with on the road. "It's been a lot of fun," Joe said. "We had a great time shooting the movie with those guys, so to kind of be backstage, there's a lot of people on this tour. It's cool for us to hang out with them all the time."

Earlier that day at a news conference at the House of Blues, the guys said that if they did find any downtime at all, they had a few places they like to hang out in Chi-Town. "Millennium Park is always a lot of fun. On my tour back in January, I took a trip up there," Nick said. "Also, just walking the riverfront is amazing. It's such a beautiful city. The fans here are some of the best in the world, I think."

Will you be checking the Jonas Brothers out on tour? Let us know in the comments!

Stay tuned to this weekend for our coverage of the Jonas Brothers and Demi Lovato's tour kickoff!