Jonas Brothers 2010 T-Shirt (Black, Men's, M) The Jonas Brothers now have two # 1 debuts within a ten month period; the last act to have two #1 debuts within a year was Jay-Z when he did it in December 2006 and November 2007. Their triumphant return to the # 1 slot is one of 2009Â's top debuts, and follows the kick off of their Jonas Brothers World Tour 2009 this weekend at the new Cowboys Stadium in Dallas in front of nearly 50,000 fans.