According to the Bjork camp, the Icelandic vocalist will release a new single, "Nattura," on Oct. 20 via One Little Indian, featuring backing vocals from Radiohead frontman Thom Yorke.

According to the Bjork camp, the Icelandic vocalist will release a new single, "Nattura," on Oct. 20 via One Little Indian, featuring backing vocals from Radiohead frontman Thom Yorke.

The only problem: according to Radiohead's management, Yorke hasn't recorded anything new with Bjork, although the possibility remains that his contribution is a sample or was taped at some point in the past.

No additional information about the nature of the collaboration was available at deadline about "Nattura," which shares its name with an organization devoted to protecting Iceland's environment. Bjork played a benefit concert with fellow Iceland natives Sigur Ros on behalf of Nattura this summer.

Bjork and Yorke previously sang together on "I've Seen It All," from the 2000 film "Dancer in the Dark," in which Bjork starred.

Meanwhile, Radiohead has announced its first live dates of 2009. The group will play March 15-17 at Foro Sol in Mexico City.