The quint circle is a diagram that shows the relationships between the keys in music. It can help you to determine the accidentals, the scales and the chords of a key. Here are 10 points that explain the quint circle easily and understandably: The quint circle consists of an outer circle for the major keys and an inner circle for the minor keys. The parallel major and minor keys have the same accidentals and are aligned in the quint circle. The C major key and the a minor key have no accidental