Share 'Dada Doubledee'

Also Ivivii. It's an alternate tuning. Beginning with a classical tuning, tune the low E string down to D, leave the A string and D string, tune the G string up to A, and tune the B string and high E string both to D, the B up a minor third and the E down a major second. This makes the tuning D-A-D-A-D-D or I-V-I-V-I-I in harmonic analysis.