Well Paulski, I felt thoroughly let down by this- when I read that Paulski is going to be having fun with 'keys' I thought, judging by his usual level of proficiency, this is going to be a piano masterclass!!
I must be a bit slow on the uptake at the moment as even though you explained it, I actually had to listen to realise you meant keys and not keys!
So with my expectations shifted I no longer feel let down (much) we now have modulation masterclass, shifting effortlessly between 'keys'! Nicely done my friend. And you topped it off by cleverly writing about Uber!
Enjoyed it after all - now go and get back behind the piano, you've got some making up to do
Yodasdad