Björk and Thom Yorke, two of the mightiest figures in avant pop music, might will be joining forces for a good cause: protecting the Icelandic environment. If a promotional CD discovered by the French Björk fansite bjork.fr is to be believed (UPDATE: It is!), One Little Indian will release the new Björk single "Nattura", which features the Radiohead frontman on backing vocals. Although the promo indicates that the single is coming out this Monday, October 13, nothing about the single has been confirmed by anyone from One Little Indian or the Björk or Radiohead camps.

UPDATE: Björk's camp has confirmed that the single will indeed be released on October 20 from One Little Indian.

According to text on the promo, the song "highlights a grass roots movement in Iceland to reclaim the country’s natural resources and wilderness from the hands of big business and pollution." It is described as "more of a protest and rallying cry than a lecture." [Thanks to reader Daniel La France for the heads up.]

"Nattura" shares its name with the website Nattura.info, a gathering place for the Icelandic environmental movement. This wouldn't be the first time Björk has teamed with Nattura; this summer, she joined countrymen Sigur Rós at a concert to raise awareness for the organization. It also wouldn't be the first time Björk has teamed with Yorke. Back in 2000, the pair duetted on "I've Seen It All", a song featured in the Björk-starring Las Von Trier film Dancer in the Dark and included on its accompanying soundtrack album Selmasongs.

Read more about Björk's thoughts on Nattura here.

Maybe next these two can turn their attention towards fixing the Icelandic economy? (On a related note, the organizers of next week's Iceland Airwaves festival want everybody to know that the festival is still going on despite the country's economic woes. Party on!)