Harmony refers to the "vertical" sounds of pitches in music, which means pitches which can be performed or sung with each other simultaneously to make a chord. Typically, This suggests the notes are performed concurrently, While harmony can also be implied by a melody that outlines a harmonic structure (i.e., https://ejournal.amikompurwokerto.ac.id/files/journals/4/articles/2099/submission/original/2099-4361-1-SM.html