Paolo Pietropaolo's The Signature Series.
Not all the keys are there yet, but my favourite is...
D minor. He does say it is the saddest key! He also credits Spinal Tap. I am verklempt!
Although at this point I could say that no more need be said, but I will undoubtedly say more at some point.
PS Right now there are about a dozen keys defined in this way, and it's all fun.