Backstreet Boys tours are becoming a routine event in recent years, but this time around they brought out perhaps the most complimentary group to perform with - New Kids On The Block - and instead of each playing a separate set, both groups would go on to perform one giant set spanning over 140 minutes.

Pictured: New Kids On The Block & Backstreet Boys

New Kids On The Block and the Backstreet Boys pulled a big crowd to the Adelaide Entertainment Centre on Monday Night. The AU Review's Kerrie Geier was there to capture the spectacular event.