According to a well-placed 'source' who happens to know someone at The Sun, the contract "means they have a real incentive to tough it out and stick together".
"The formal length is for 36 months and an album a year — but the clever part is they get the big pay day after the three years," he or she explained. "If one of them walks away before then, then all five miss out on the money."
Well, we're sure they only miss out on a few quid, right?
"They don’t miss out on a few quid either, we are talking millions," the fairly chatty 'source' continued.