The Black & Blue World Tour was their fifth worldwide concert tour by the Backstreet Boys in support of their fourth album Black & Blue (2000) and the world tour took place in 2001. The first leg of the tour kicked off January 22, 2001 in the United States. The second leg began June 8 in the group's hometown of Orlando, Florida, and was temporarily put on hold July 9, in order for group member A. J. McLean to seek treatment for clinical depression which led to anxiety attacks and the excessive consumption of alcohol. The tour resumed August 24 in Milwaukee, Wisconsin, and wrapped up October 19 in Paradise, Nevada. The Boys then continued their tour around the world before it came to a close by the end of 2001. It grossed over US $315 million worldwide, becoming the highest-grossing concert