Thom Yorke debuts new tracks, was one of them a Radiohead song?

The show, at Le Trianon, saw the likes of Thom Yorke, Patti Smith, Red Hot Chili Peppers' Flea, and more, performing on stage.

Yorke performed a solo acoustic set, which, as well as some more well-known cuts from his catalogue, featured a couple of new jams.

During one of these - "Silent Spring" - Yorke says "this is Jonny's bit", prompting many to reach the conclusion that it's a raw, unheard track from Radiohead's upcoming album.

Pathway To Paris is a "is a dynamic collaboration between musicians, artists, sustainability consultants, cities and activists to highlight solutions to climate change in the lead-up to a critical UN meeting on climate change in December 2015 in Paris."

Radiohead last released a record, King Of Limbs, in 2011. They've been working hard on its follow up throughout 2015.

Check out both new tracks below.