OK so if oyur playing in the key of Amajor then you can use all Amajor scales, and F# minor scales becuase thats its relative minor...right?? OK so my question is, all the BLUES scales that are scattared around this site are ore or less PENITONIC MINOR scales. And you mark them all as the root of the scale being the key its in, but technically, couldn't you only ( creativity aside, in therory im meaning) play you G BLUES scale with a song in the key of A#??, i dunno, cuz in all of the post the keys are the same as the root, and i was taught that a minor scale was in the key of its relative major. Teach me!