When he's not busy being one fifth of the world's biggest boyband, it turns out Harry is trying his hand at writing some hits of his own. And with four consecutive number one albums under his belt, he should know what makes a good tune!
Teaming up with Megan, the 1D heartthrob joined her in the studio to pen their duet 'Someday Maybe'.
Earlier today, the 'All About That Bass' singer confirmed she and Harry had teamed up together.
When asked by Nick Grimshaw on Radio 1's breakfast show if the rumours were true, the 21-year-old replied: "Oh man, I wrote a song with Harry, yes."
Revealing the title of the song is 'Someday Maybe', Megan quipped she hoped "someday" the track would finally be released.
Despite having her reservations about Harry's songwriting skills before their studio stint, Meghan revealed to The Sun she was pleasantly surprised by the X Factor star.
"He's an incredible writer," she said. "I was worried he'd just be a 20-year-old boy... but he gave me very poetic, mature lyrics. I was like, 'Well, damn, Harry, you know what love is'."
She then claimed their ukelele track was a "cute acoustic love thing", but denied there was any romance between herself and Harry, insisting they are just good friends.
Meanwhile, on hearing news of Meghan and Harry's collaboration, fans were quick to share their excitement on Twitter.
One user tweeted: "@Harry_Styles we both love Meghan Trainor this is great." While another eager follower said: "Meghan Trainor duet with Harry Styles, OMFG the Gods have heard my prayers!"
Here's hoping we get to hear it soon!
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Watch Meghan Trainor's video for 'All About That Bass' here: