Tracks are usually called by the first letter(s) and number of the track. For example, Mute City 1 = MC1, Silence 1 = S1, Sector Alpha = SA, Mute City 3 = MC3. | Tracks are usually called by the first letter(s) and number of the track. For example, Mute City 1 = MC1, Silence 1 = S1, Sector Alpha = SA, Mute City 3 = MC3. |