Icelandic experimentalists Sigur RÛs are taking time out from their swimming pool recording studio sessions to perform on CBSí the Late Late Show With Craig Kilborn. The group will mark the occasion by playing an un-released track titled "Njosnavelin" (Eng. "The Nothing Song"). The song, along with two others from the band, will appear on the Cameron Crowe film Vanilla Sky which opens today. The version of the song that will appear in the film is a live recording. Crowe has also edited into the film some of the bands performance backdrop visuals which were recorded by singer, Jonsi Birgisson on a hand-help video cam. So if your in tonight, catch them with Kilby and if your out, go see Vanilla Sky.