Question

Melody is the horizontal dimension in music, while harmony adds _________ perspective.

Answer 1

Melody is the succession of single tones or pitches perceived by the mind as a unity.  Melody is the horizontal dimension in music, while harmony adds vertical perspective. Chords are the essential part of harmony. The harmony is the "vertical" relationship between simultaneous chords. So, harmony is the "vertical aspect" of music and melody the "horizontal".