Here's an interesting one - Radiohead and Sigur Ros are creating music for a new show by the Merce Cunningham Dance Company in New York. On the launch night of the show - called 'Split Sides' - each band will play 20 minutes of new music. The twist is the dancers won't have heard the music until the first night so they will have to improvise the visual bit of the show.
Radiohead's Jonny Greenwood told Billboard: "It is raising lots of interesting problems about what dance music is. We're talking about the bands crossing from one to the other or sorting out a structure. It could be interesting. Maybe we'll all kind of surprise each other and do the opposite kind of music that we're known for."
The show will debut in New York in October.