One Direction could last 20 years if they wanted to, according to Simon Cowell.
The X Factor boss praised the boyband's work ethic and revealed that they have taken some "risks" for their new album
"There's some very different kinds of songs than what we've done before, they've taken a few more risks. Most importantly, the boys love writing, they love recording."
He added: "I went on Twitter recently to say I don't think they're going to split up, they're having too good a time! I think they could be doing this 5, 10, 20 years if they wanted to."
One Direction have been working with a number of songwriters for their upcoming fourth studio album, including Pharrell Williams, Naughty Boy, Kodaline and The 1975.
The collection would serve as the follow-up to 2013's Midnight Memories, which was the biggest-selling album worldwide last year.