Speaking of collaborations, I've been saying for the longest time that the Beatle sons should get together and form a band. Julian, Sean, Zack Starkey, James McCartney, and Dhani Harrison. The first 3 are amazing musicians....I've never heard anything about Dhani playing before, but I'm sure he does. Could you imagine that?? That would be like the supergroup of all time!! But unfortunately, I doubt it will EVER happen.