If you play the white notes from A to A, you’ve just played an A minor scale. If you play all the white notes on the keyboard (C D E F G A B C) in order, then you’ve just played a C major scale. You can’t just use any seven, and the seven notes are what define the musical scale you’re using. It won’t automatically sound awesome, but it’s half the battle.īut here’s the thing: the question of which seven notes you use is very important. Put basically, if you restrict all the notes you play to that specific selection of seven - that ‘scale’ - everything you play will be in key.