Why do Parallel Sixths Sound Kitschy?

When parallel sixths appear several times in a piece of music, the music is often perceived as "kitschy" or "sweet". So far there has been no explanation for such sensations. In this work, an explanation based on the Theory of Musical Equilibration is described. Accordingly, the kitschy effect of parallel sixths is due to the fact that a conflict arises in the assessment of which of the two voices is the main voice and which is the accompaniment. The upper voice usually plays the role of the main voice. However, in parallel sixths, the lower voice is exactly the upper third of the main voice transposed down an octave. However, upper thirds of a melody are usually perceived as a heightened version of the melody. With parallel sixths, the idea arises that a melody is accompanied by its own increase. This mismatch can now create the impression of "kitsch". This would be comparable to a worthless picture surrounded by an overly ornate frame.