Viewers will be familiar with JJ, Ben, Steph and Corey after they wowed the judges and audience alike on last year's talent show.
Gaining high-profile supporters in the name of will.i.am, The Wanted and Little Mix, the London-based group also gained a large online following, and sold out their first headline tour in July in just five minutes!
Now, Luminites are back with an upbeat pop song, 'Do Something', which is about grabbing the bull by the horns and jumping at the opportunities life throws your way.
Speaking about their release, the four-piece said: "Everything we've done and all the success we've achieved so far has been down to us putting ourselves out there and making the most of everything that's come our way and that's why this song means so much to us.
"We are so excited to be releasing our first ever single and hope people enjoy it."
'Do Something' is due for release on 10 November.
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Check out Luminites' first ever audition on Britain's Got Talent below: