LCD Soundsystem performs during the 2010 Bonnaroo Music and Arts Festival on June 11, 2010 in Manchester, Tennessee.

LCD Soundsystem fans were treated to an unexpected Christmas Eve surprise. The James Murphy-fronted group, who called it quits five years ago, dropped a new song called "Christmas Will Break Your Heart." And, according to sources, the band's new material signals that there's more to come.

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The Brooklyn outfit posted the moody track to social media, writing "there’s been this depressing Christmas song I’d been singing to myself for the past 8 years, and every year i wouldn’t remember that I wanted to make it until December, which is just too late to actually record and release a Christmas song."

According to the post, the band recorded the song in New York less than two weeks ago during a break between guitarist Al Doyle's tours with Hot Chip.

so, there’s been this depressing christmas song i’d been singing to myself for the past 8 years, and every year i wouldn... Posted by LCD Soundsystem on Thursday, December 24, 2015

Despite the official denial of previous reunion reports from DFA Records, multiple sources tell Billboard that a reunion is still on and the band will be headlining AEG Live's new Panorama Festival in New York in 2016, among other appearances.

"LCD Soundsystem are getting back together," says an insider with ties to the band. "They are waiting for their guitarist who is part of Hot Chip to finish up and then they are getting back to it."

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Asked why the record label would shoot down the reports, the source speculates that new material could be the reason "and they don't want any pressure."

A representative for the band declines to comment on the latest round of reports.

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Consequence of Sound first reported the reunion on Oct. 8, citing “multiple sources.” Billboard also confirmed via a well-placed source that the New York outfit was "definitely reuniting" and had big touring plans with major festival appearances in the works.

The backlash from DFA Records' camp was swift, with label manager Kris Petersen taking to Twitter to shoot down the reunion rumors and lambaste the "morons" who reported otherwise.

hey idiots, LCD soundsystem isn’t reuniting. they’re dead, along with your good looks and cultural relevance. — I NEED NEW EYES (@krisdfa) October 8, 2015

"LCD Soundsystem is not reuniting at Coachella next year," Petersen told Vulture. "I’m sure some festivals have offered the group a giant tempting pile of money, but there is no truth to this. Can we all just move on with our f---ing lives?"

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If true, the reunion would mark the band's first performance since their sold-out swan song bow at New York's Madison Square Garden on April 2, 2011.