Guenter
Who is Leon? He's good.

He writes the lyrics & sings (I've known him since i was 5 which is a long time ago!)
These days he emails me songs - tells me it's an acoustic folk song and I shouldn't play too much guitar (which I usually ignore).
He lives these days about 3 hours drive so every 6 months or so he leaves his wife comes up, we lock ourselves away and he sings for a day or so. I then spend time re-arranging the songs (which my wife obviously loves)and we use Dropbox these days for collaborating & demos etc).

Thanks to all for the comments (especially the Clapton one.