For a change, he's not jumping into bed with other musicians.
The song is called This Changes Everything. And the video looks like this:
Lovely folky pop song, complete with rabbit attack around the 3.15 mark.
If you haven't read the new issue of GT or followed K's antics, he's got a hot bed of creativity. The latest youtube cover he did was of Mc Fly, with Antonion Lulic...
They manage to make McFly's electro monster sound like a rocking campfire folk song. Which is quite an achievement.
More K stuff, here.