Harmony refers back to the "vertical" sounds of pitches in music, which implies pitches which have been performed or sung collectively simultaneously to make a chord. Generally, This implies the notes are played simultaneously, Whilst harmony may also be implied by a melody that outlines a harmonic structure (i.e., by https://uancv.edu.pe/ofinvestigacion/app/upload/users/4/455/my_files/apakah-penampilan-penting-dalam-industri-musik.html