By Jeremy Medina
Updated March 18, 2009 at 12:00 PM EDT
Rob Hoffman/JBE/Getty Images

The Jonas Brothers’ still-untitled fourth studio album, due June 15, is inching closer to completion. Nick Jonas told Billboard.comnine songs have been recorded and the album has been partly inspired by The Zutons, Neil Diamond and the brothers’ fellow rocking siblings, Kings of Leon. The album will be followed by the U.S. kickoff of their world tour June 20.

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