Yep, the old Db. (a.k.a. C sharp) Next root is a lovely "B". Suhweet progression!
I love you all and respect you all, so for the love of God slap a tuner on that Db, and tell me what it says. And above all, please tell me if I'm the crazy one so I can go all Van Gogh up in here.
Please, either I'm done for, or friends don't let friends play flat D flats. :)
If you put a tuner on it, and it's good, then I will join the Flat Earth Society, Geriatrics Division.
-Tom
p.s. again, lovely tune!