Notes can also be sustains, in which the player must hold the matching button(s) after strumming, the duration of the hold being indicated by a line following the note or chord. Notes can be singular, or multiple at a time, forming a chord.
For guitar, players must hold specific buttons that line up with combinations of five colored notes that appear on the screen on a 'highway' when the notes hit the bottom of the highway, the player must strum to hit the notes in time with the music.
