The Backstreet Boys are back (2)

The theme of this year's tour is "appreciation". In order to give fans a perfect and memorable concert, band members decided to let their fans choose which songs would be sung through a polling process on their official website. All selected songs will be performed during the concert.

Kevin Richardson, who returned to the band after 7 years of flying solo, said the members have all had their shares of ups and downs since the formation of the band 20 year ago.

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