Originally Posted by: ShootaMcgavinIf i were to sit down with a couple o' guys, to you know, just jam in "Bb," would i use the Minor pentonic and its progression, or the major with its progression? Because i've noticed that, say, A7 works well in the Aminor pentatonic box, but its not in key! What do i use? major or minor? Or shouldn't i care? I heard that blues has less rules than classical music.

All i want to know is when someoen in a blues band says Bb or A, do they mean Major, or Minor?!

There are major and minor blues progressions - keep that in mind. But in the typical scenario that you describe, they usually mean a basic 1-4-5 blues progression using all 7th chords. You can get away with using the blues scale of that key (minor pentatonic with an added b5) over the whole progression, but when you get bored with that, you might want to consider focusing on the chord tones of each chord when it's played. Mix that with the blues scale, and you will have a more sophisticated sound.