Major Scale: A major scale is a diatonic scale consisting of seven notes per octave. It forms the foundation for many melodies and harmonies in Western music.
Minor Scale: A minor scale is also a diatonic scale consisting of seven notes per octave. It has a different pattern of intervals compared to the major scale and often conveys a more melancholic or sad mood.
Blues Scale: The blues scale is derived from the pentatonic scale by adding one additional note called the "blue note." It is widely used in blues music and adds an expressive and soulful quality to melodies.