Dudes, I flippin' love "So What" chords. They are the cat's meow. The bee's knees. They get my goat, and float my boat. Really.
I just posted a little lesson video on SW harmony and how it is actually just the standard pentatonic scale voiced as a chord. For those of you who aren't already savvy, here it is. Enjoy!
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This lesson goes over how to set pentatonic SW chords over particular bass notes to get modal substitute voicings. The diatonic superimposition system is as follows (transpose as needed):
Dm pent. SW/D = Dm7(add11) Use these for ii, iii, and vi chords.
Dm pent. SW/F = F6/9 Use these for I, IV, and V chords.
Dm pent. SW/G = Gm11(omit b3rd) or G9sus Use these for ii, vi, and V chords.
Dm pent. SW/Bb = Bbmaj13 Use these for I and IV chords.
Dm pent. SW/Eb = Ebmaj13+11 Use these for IV chords.
D
m pent. SW/C = Cm13(omit b3rd) or C13sus Use these for ii, and V chords.