Originally Posted by Ray man
Alone, not at all.
Interesting progression, the example you gave guitarist looks like a combo of secondary an substitute dominants.
Its very much like math and that turns most people off.
It is very mathematical. Math and Music Theory were a bitch for me. I do a great job overcompensating though.
I always viewed that progression as a I7-IV7 with tritone subs connecting them. Everyone I show that progression to loves it though.
Here's another interesting correlation between math and music. The Fibonacci Sequence is a sequence of numbers where each one is the sum of the 2 that come before it. I'm just going to use the first 6 numbers to make my point. 1, 2, 3, 5, 8, 13. Root, second, third, fifth, octave, take the 13 down an octave is a sixth. New order Root, Second, Third, Fifth, Sixth, Octave. Major Pentatonic Scale. I'd be interested in trying out the Pigtronix Delay with the Golden Ratio setting.