Hello!

Just 2 cents from me, more in the context of chord progressions (not caring for the melody):

Major 13 (7/9/13) leads back to the major tonic, while a dominant 7#5 leads to the minor tonic, but sometimes can bring you to the major tonic too.

There would be something to write about diminished chords and also the augmented triad, but I quit here. Hope it helps a little bit along the way.....

wink