Chord Patterns
Having even their ownHarmonic Staff,
     thechord patternsof Melo-Harmony are so neatly categorized
          that they become Archetypes in themselves.

TheM34 chord patternis certainly the simplest and most fundamental.
TheM74 chord patternseems the next most popular, followed by
the combinationM3474chord pattern of songs likeHappy Birthday.
     However, so many songs are built on these patterns
          that there seems to be no valid reason to choose one over the others as an Archetype.