I took music theory but that was some 50+ years ago!

I would suggest looking for a music theory book that is dedicated to your main instrument. I have a couple that pertains to the guitar that has helped me tremendously.

What I like are semitone modulations. Things like Am7, Am7b5, Gmaj7, G13b9 are semitone moves. Many times in a blues song I will replace a dominate 7th or 9th with a 13th.

But rule #1 as Mac has said many times "If it sounds good then it is good"!


Back in my day the only time we started panic buying was when the bartender shouted "last call"!

64 bit Win 10 Pro, the latest BiaB/RB, Roland Octa-Capture audio interface, a ton of software/hardware