[2] On 26 March 2013, Humes announced that the band were heading out to Los Angeles to record the album: "We're booked in to go to LA and work with Rodney Jerkins again and are looking at some new people too.

[5] On 26 September, JLS's management tweeted that the band's last ever single would be called "Billion Lights" and also revealed the artwork, "So...We're very excited to finally share this!!

[6] "Billion Lights" was written especially for the band's Greatest Hits album by Camille Purcell and Ali Tennant, who wrote JLS's 2012 single "Hottest Girl in the World".

[7] During an exclusive interview for the Official Charts Company, JB Gill said: "Billion Lights is also a celebration.

We wanted to make sure we came with something that is up-tempo, that's traditional of JLS... You're gonna see us singing and dancing in the video.

[9] Writing for the Daily Record, John Dingwall gave the album 3 stars out of 5 and wrote: "AFTER five number one singles, JLS release their final song.

"[10] Robert Copsey of Digital Spy said, ""We ignite the sky/ A billion lights tonight," they sing over strobing beats and ravey synths, recalling their consistently energetic live showings in all their back-flipping and pec-posing glory.