IF I WANT TO IMPROVISE OVER THIS PROGRESION( EX. G MAJ EM AM D7 ) 1 6 2 5 PROGRESSION IN G , I CAN PLAY OVER GMAJ AND EM ( PLAY THE G MAJOR SCALE?) AND OVER AM D7 ( SWITCH TO AM DORIAN?) OR ALSO I CAN PLAY ONLY THE G MAJ OVER THE COMPLETE PROGRESSION?( OR EM)?
