Original: While this definition encompasses many scales and modes such as Dorian mode and the Phrygian mode , the term in its stricter sense is usually limited to the natural minor , harmonic minor , and melodic minor scales , described below , which are in most common use in Western classical music ( see major and minor ) .
Simplified: Usually , when people talk about minor scales , they mean natural minor , harmonic minor , or melodic minor scales , which are the most common in Western music .