a melody is a form of:

Melody



noun — Plural: Melodies
1.
(Sweet music, tunefulness, a song or tune, the leading part in a harmonic composition) ទំនងភ្លេង, សំឡេងពិរោះ, បទ
Example: The song has a beautiful melody, The melody is familiar but I don't know the words to that song, You sing the melody and I will harmonize.
Example: There's not much melody in this piece, is there?
ENGLISH MEANING
noun — Plural: Melodies
1.
A sweet or agreeable succession of sounds.
2.
A rhythmical succession of single tones, ranging for the most part within a given key, and so related together as to form a musical whole, having the unity of what is technically called a musical thought, at once pleasing to the ear and characteristic in expression.
3.
The air or tune of a musical piece.
1.
air, aria, ballad, composition, lyric, music, song, strain, tune