JLS have premiered their last ever single, Billion Lights.
The quartet, who are preparing to split after five years together, unveiled the song, which is dedicated to their fans, on Capital FM.
Introducing the track, Marvin Humes said: "We want to say the biggest thank you ever. This is our final serving to you. JLS, Billion Lights, love you."
Billion Lights described as a "straight-up pop banger" received positive reviews.
"I feel like Billion Lights is to show they're going out on a high. They're going out partying. Just feel like were going to miss out," one listener tweeted.
Another fan said: "Billion lights needs to reach No1 when it's released."
Aston Merrygold, Marvin Humes, Oritsé Williams and JB Gill shot to superstardom after finishing second to Alexandra Burke on the 2008 X Factor.
JLS bow out of the music industry with a farewell tour which kicks off in Belfast on 1 December. Their final album will be released on 18 November and will feature the band's biggest hits.