Why Blue are back together
When boy bands are put together by record companies they often don't have any control over their image or sound, so when Blue's label told them their big comeback would be a greatest hits album, the group had other ideas.
They sent themselves off to business school and worked out how to break free from their contract and go it alone. It has been a bit of a gamble, so they have called their new album of original songs 'Roulette'.
The band spoke to BBC Breakfast about why they are happy to be back.