Last week, we learned that Harry Styles' debut album sounds like 'Queen and David Bowie', according to some reports.

It looks like we won't have long to wait to find out if that's true, as the boyband hearthrob has announced his debut single.

A mysterious ad for the single aired during The Voice on Saturday night, showing Styles opening a door in slo-mo and giving no information other than 'April 7th' over a piano riff.

So, then - we'll hear the song, title unknown, on Friday week.

Until then, watch the ad below: