The four difficulty levels for each song provide players with a learning curve in order to help them progress in skill. The first difficulty level, Easy, only focuses on the first three fret buttons while displaying a significantly reduced amount of notes for the player to play. Medium introduces a fourth fret button while adding more notes, and Hard includes the final fret button while adding additional notes. Expert does not introduce any other frets to learn, but adds more notes in a manner designed to challenge the player.