Learn diatonic triads in C Major. Then learn these triads in Bb Major, F Major and G Major. Once you are comfortable with the first two segments of this lesson, learn to use diatonic triads when improvising in D Dorian and G Mixolydian. Ibanez AZ 2204 Custom. Lehle P-Split High-Impedance Signal Splitter. Fender Pro Reverb Amps (2). D’Addario Strings. Pickboy 1 mm TF Signature. BOSS RC-1 Loop Station.