This ain't Blues and I've never seen Rio. Don't know why I named it that other than it is Latin-ish and I play a little Blues-ish lead guitar on it. Medium Bossa Real Style. Hope it sounds OK just mixed with earbuds. Spending the night my Daughter's house right now using her interweb and going to Church with tomorrow. No web at home so if I don't reply quickly, I'll try to as soon as I can.