Whoever said that Niall Horan would never make it as a songwriter - ha! You may eat your words now.

Alright, so the clip below doesn't exactly mark him out as a contender for the heir to Burt Bacharach's throne, but it's marginally amusing, nonetheless.

The One Direction man took the 'Instant Song Challenge' backstage on Jimmy Fallon's show, which meant that he had to make up songs on the spot, given only the title (which was chosen 'at random').

With songs like 'Quickly Clicking Pen' and 'Stepping On Toes' in the mix, it's surely only a matter of time before Horan's debut album is completed and sweeping the board at the Grammys.

Watch it below: