Extinction Rebellion are set to release a Christmas single, which calls for action on global warming "before we're all dead".
The climate change protest group are hoping to top the charts with the song, created with the help of Lancashire-based rock band, the Jade Assembly.
A music video has also been made to accompany the track, titled Time For Change, which features doctored shots of the Houses of Parliament on fire, Downing Street flooded, and MPs including former Prime Minister Theresa May wearing gas masks.
It also includes shots from protests staged by the group around the world in the past six months.
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.
News of the track comes just one week after Extinction Rebellion won a High Court challenge against the Metropolitan Police, who issued a London-wide ban on their 'Autumn Uprising' protests last month.
The force imposed a blanket ban on the assembly of more than two people linked to the climate change activism group, after their protests caused mass disruption in the capital.
But two senior judges ruled the decision to impose the ban, made under Section 14 of the Public Order Act, was "unlawful".