Science Fair Project Encyclopedia }} In music, a melody is a
series of linear events or a succession, not a simultaneity as
in a chord. However, this succession must contain change of some
kind and be perceived as a single entity (possibly gestalt) to
be called a melody. Most specifically this includes patterns of
changing pitches and durations, while most generally it includes
any interacting patterns of changing events or quality. "Melody
may be said to result where there are interacting patterns of
changing events occurring in time." (DeLone et. al. (Eds.) 1975,
p.270-1) "The events occurring in time must involve change of
some kind to be understood as related or unrelated...The
essential elements of any melody are duration, pitch, and
quality [timbre, texture, and loudness]" Melodies often consist
of one or more musical phrases, motifs, and is usually repeated
throughout a song or piece in various forms. Melodies may also
be described by their melodic motion or the pitches or the
intervals between pitches