A melody is a sequence of notes that the ear perceives as a single, coherent line. It usually has a distinctive contour of rising and falling pitches and a clear rhythmic profile. Melodies are what most people hum or remember after hearing a piece.

A strong melody balances unity and variety. Repeated motives create recognition; contrasting gestures provide interest. The relationship of the melody to the underlying harmony and to other voices determines much of its expressive effect. Some melodies are primarily stepwise; others feature dramatic leaps.

Composers craft melodies with attention to range, climax, and phrase structure. Performers shape them with dynamics, articulation, and subtle timing. In many styles the melody is the primary carrier of musical identity, while harmony and texture support it.

Even complex works often contain memorable melodic threads that guide the listener through the form.