The Locrian mode is one of the most sonically challenging sounds in music. And, though built on the major scale, this mode sounds totally removed from its parent scale's bright, happy vibes.

A Locrian notes: A Bb C D Eb F G As you can see, nearly every note is different, with the two scales sharing just a root note and a 4th interval (A and D). Now, here are the intervals: A major ...