Ok, I'm using that guitar tuning for composing with one of my guitars. But in the other I am trying to use F#F#DDGC. Have any of you ever use this combination? I mean, I am not a musician with all the theory but they sound kinda cool mixed up together. And I search if SY has ever use this combination and they hadn't. This guitar tuning (F#F#DDGC) exist or I've just made it???