Jonas Brothers on Ryan Seacrest: Announce Radio City Music Hall Concert October 11!

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The Jonas Brothers made a major announcement on Ryan Seacrest's radio show this morning!

What was the big Jonas Brothers announcement? A Jonas Brothers concert at Radio City Music Hall on October 11, 2012!!!

Kevin and Danielle Jonas were on hand to talk about their new reality show, Married to Jonas, but the Jonas Brothers also checked in with the big news.

Kevin, Joe and Nick said during their On Air with Ryan Seacrest call-in, reuniting for one show only at Radio City Music Hall on October 11! Tickets go on sale August 24 at ticketmaster.com.

Ryan also spoke with Kevin and Danielle, noting that she took the first Jonas brother off the market, even though she knew nothing of the Jonas Brothers when she first met him.

Why did they do the reality show? Kevin said "they really enjoyed it" and they learned more about each other because the cameras were like "therapy," forcing them to communicate

They also talk about the dynamics of the in-laws and the baby question--she wants four kids and he wants two.