The Use Of A Superposed Third Chord In A Dominant Seventh Chord

upper structure triads a theory of chord appplication obtained by jazz plays in the practice of improvisation.upper structure triads In terms of sound effect,it can bring the listeners more rich auditory feeling and more colorful sound.upper structure triads it is also widely used in improvisation.lt can help players to create more and richer melody lines when they perform improvisation.lt provides more choices for improvisers and enriches the theoretical knowledge of jazz.upper structure triads it can be used in the major seven,minor seven,genus seven and other seven chords.Among them,the application in genus seven chords is the most widespread and common,which is also the content of this paper.