Okay. But in keeping with what I perceive the OP's topic is, there comes a point where all variations, melodies, and especially harmonies according to what actually works, have been explored. After which "only" dissonance remains,not to be confused with Jazz. That, or what we're subjected to of late, straight monotones of higher and lower sequences or non-melodic ones. The stuff that was tossed over the shoulder hopefully into the trash when the real stuff was being written.