I think it's important for artists to work together. It's great for fans to see like Ludacris came out to our show in Atlanta and kinda made a surprise appearance there it shows a mutual respect for what each other does.
What can you do if a part of it is uphill? You can't work out another route. You've just got to run the one they give you. But they tell me London is a nice course. Even the cobbles I hope are not very much of a problem for me.