The protest group has joined forces with Lancashire-based rock band the Jade Assembly, aiming to claim a Christmas No.1 with a song that calls for action on climate change, "before we're all dead".
The single, called Time For Change, comes with a video featuring footage from the group's protests around the world in the past six months, with the main focus on London, according to newspaper reports.
Lead vocalist John Foster sings: "So whether you're a lucky man, a banker or a broken man, I'm standing here for everyone who's never too afraid to say - we need you now, we need voices.
"A time to look ahead and now a time before we're all dead, come on, it's time for a change. I need everyone to be with me and I need everyone in here tonight to be themselves, so come on."
Time For Change will be released early next month.
