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The trio have scored their first No.1 with 'King' so we thought you should find out everything else you NEED to know about these guys.
And together they are now set to take on the world of music!
Olly only joined the band after Mikey overheard him singing in the shower.
Here is starring in 'Gulliver's Travels' as Prince August (and he looks so cute).
For those of you who aren't familiar with the name, he worked with Sia on both 'Chandelier' AND 'Elastic Heart' music videos.
That's right, the three-piece were the opening act on the main man's 2014 Autumn tour of the U.K.
Their live shows are in such high demand that many of the venues have had to arrange extra dates to accommodate the demand for tickets.
They knocked Ellie Goulding's 'Love Me Like You Do' only hours after the song was released.
Some of his big screen pals include Emily Browning, Ben Whishaw and Hannah Murray from 'Game Of Thrones' and 'Skins'.
He starred in the play 'Peter & Alice' in the West End with the Hollywood legend in 2013.
Look how cute Emre's dog Zey is! Although it's probably best to leave the music making to the humans.
Be sure to check out their SoundCloud account where they post all their covers and remixes.
Their debut album should be with us by the end of 2015 and we can't wait.