NKOTBSB tour: Boy band 'mash up'

Two of the world's most popular boybands, New Kids On The Block and Backstreet Boys, say they have come together for their NKOTBSB supergroup tour out of "respect".

Donnie Wahlberg from New Kids On The Block told BBC Breakfast the boy bands bands were never in competition.

"When we were first presented with the idea of touring with Backstreet Boys, we thought it was insulting to sort of ask them to to open for us, " he said.

"It was never a competition, always respect," Wahlberg added.

The musicians say they are performing "mash ups" at the beginning and end of the show alongside a collection of their biggest hits.