Take a look at some form of musical score, you will notice that at the beginning of every line, there are a collection of ...

Harmonic minor keys are used when writing chords. There is another version of the minor key known as the melodic minor. This is used when writing a melody. Each key signature has two possible keys.

Only the order of tones and semitones is different. Both keys have the same key signature, shown here:. Because they share the same key signature and the same notes, it is common to modulate or change ...