With Harry Styles releasing his debut single 'Sign of the Times' this morning, it seems that One Direction is a thing of the distant past.

Four of the boyband's original five members have now released a solo single, with Liam Payne the only person yet to unveil something.

They're all very different songs, but the big question is, whose debut single was the best? Will you allegiance lie with Mullingar's Niall Horan, or has he been pipped by his former bandmates?

See below for a refresher and then vote in our poll below:

ZAYN MALIK – 'PILLOWTALK'

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NIALL HORAN - 'THIS TOWN'

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LOUIS TOMLINSON & STEVE AOKI - 'JUST HOLD ON'

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HARRY STYLES - 'SIGN OF THE TIMES' 

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VOTE NOW!