Scales allows the user to choose a scale, a root note for it, and the instrument on which the scale should be played. Scales will show where the scale is on that instrument and the chords that fit on that scale. Similarly, one can choose a chord (major, minor, suspended, diminished, augmented, major, minor, and dominant seventh, and so on) and an instrument. Scales will show you where the chord is on that instrument and the scales that contain this chord. Finally, the user can use scales to listen to scales and chords.