Hello, I am looking for some information getting really familiar with 12 bar blues. Are there any good tutorials or books on this that I should check out. I am playing in a blues band now and would like to really get 12 bar in the bag as it seems to be the standard for blues musicians. I understand the structure and I IV V. Where I seem to be struggling is with the fills and what to play in between each sequence. There are countless videos with people playing 12 bar on youtube but nobody really explains why or how to play the fills that they do. Any advice on the best route to take to get my blues chops up 100 percent? Thanks!