It's been six years (who is she? Garth Brooks?), but during the finale of her show on OWN - "Why Not? With Shania Twain," on June 12th, we'll hear "Today Is Your Day." It will be available exclusively on iTunes immediately following. If you've been watching "Why Not? With Shania Twain" then you know all about it since they have documentted the creation of it during the show.