Well, it sounds like someone's been rifling through his dad's Queen and Pink Floyd records.

Harry Styles' debut single 'Sign of the Times' made its debut on BBC Radio 1 this morning, and it may surprise some people because it doesn't sound particularly boyband-y at all.

In fact, the former One Directioner has taken a turn for the distinctly mature rock ballad, with a song that builds and builds to a big, crashing finale.

Hear it below: