Its the chords and kind of the vibe the song gives. basically chord progression that has a pleasing effect.
Proportion because balance is the way the painting is put...I think
Answer:
Symbolism was an art movement in response to Realism and Impressionism. Poets, musicians, artists, and writers all used Symbolism to express meaning in an indirect manner. Symbolist painters wanted their pictures to depict a meaning beyond just the figures they drew.
Unique appearance, structural innovation, and creative concept.