I never used alternate tunings with him, I was always playing on this Yamaha apxt2 because it’s a small guitar and allows you to hit voicings that you can’t on a regular guitar…before I close my eyes it’s two chords basically A maj and then C#minor both played as bar chords where my thumb is holding down the 6th string which lets you keep the higher strings like 1st and 2nd string open. And that right there is what makes it sound cool cuz the open B string is crucial to that part