 The basic game is played by pressing the arrows displayed on the screen (with the exception of red "chance" arrows) and pressing the spacebar or the control key on every 4th beat of the song.The more accurately the spacebar or control key is pressed, the higher the score.A grade of "PERFECT" will provide players with the greatest score, a grade of "GREAT" and "COOL" will provide players with decent scores, a grade of "BAD" will provide players with very little score, and for "MISS" will provide players with no score for the turn.