NKOTBSB is a compilation album by American boy bands New Kids on the Block and Backstreet Boys. Released on May 24, 2011, the album features five hits from each group, two new joint recordings "All in My Head" and "Don't Turn Out the Lights", as well as a mash up. The album debuted at number seven in the US, selling 40,000 in the first week of its release. The album coincides with the joint tour featuring the groups, starting at the Allstate Arena in Rosemont, Illinois on May 25, 2011.
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