This continues until a 4x multiplier is achieved. After a player correctly plays 10 notes correctly in a row, the score is multiplied by 2. The Medium difficulty uses the blue button in addition to those three, and Hard and Expert use all five buttons.Ī single note in Guitar Hero is worth 50 points. The Easy difficulty only uses the first three fret buttons, that is, the green, red, and yellow. In Guitar Hero, players use the strum bar along with the fret buttons to play notes that scroll down the screen along a fretboard.