sentences:  Success or failure will cause the on-screen Rock Meter to change, showing how well the player is playing (denoted by red, yellow, and green sections).Should the Rock Meter drop below the red section, the song will automatically end, with the player booed off the stage by the audience.Successful note hits will add to the player's score, and by hitting a long series of consecutive successful note hits, the player can increase their score multiplier.