Portishead‘s Beth Gibbons has recorded a “glacial roar” for a giant polar bear that Greenpeace will use to lead a street protest in London next Sunday.

The singer recorded a roar for the double-decker bus sized polar bear puppet called Aurora, which will feature a giant sound system in its head to play the sounds of ice cracking, Arctic wildlife, and other roars donated by members of the public.

The march will be part of a global day of action to demand that the Arctic be protected from oil companies planning to drill in its waters.

“The Arctic is an incredible place, home to polar bears like Aurora as well as millions of people,” said Beth Gibbons said in a statement. “What does it take to make large corporations, financially driven like Shell, to stop and consider their responsibility? The irreversible damage they cause knowingly is morally wrong. Aurora’s parade will be an amazing expression and one I am pleased to have lent my voice.”

Jarvis Cocker previously lent his weight to the charity’s Save The arctic campaign, which demands that oil drilling and unsustainable fishing are banned in Arctic waters.