I'm of the conservative branch who thinks using 7th chords i jazz.
For me this chord progression has far to many halftone steps to feel comfortable. Should be jazz territory but it isn't for some reason.
So hit me, what's the key to begin with ? Why isn't this jazz ?
I made a little quick demo for those off you who are curious how it sounds. It's a bit new ageish so thread carefully if you're sensitive to such.
http://www.box.net/shared/3izvbfsk46
I especially like when it goes from Cmin to C again. That's awesome.