What is a Blue Note?

A blue note is a note that is intentionally sung or played slightly lower in pitch than the standard note in a musical scale, creating a distinctive expressive sound. Blue notes are most commonly associated with blues and jazz music, where they add emotional depth and a characteristic “bluesy” feel to melodies and improvisations.

In many blues melodies, the notes that are most often altered are the third, fifth, and seventh degrees of the scale. Instead of being played exactly as they appear in a traditional major scale, these notes are slightly lowered or bent in pitch. Musicians may slide into the note, bend it with their voice or instrument, or hover between pitches to create the expressive effect that defines the blue note sound.

Blue notes are an important element of blues, jazz, rock, and many related musical styles. They give melodies a sense of tension, emotion, and individuality, allowing performers to shape notes in ways that go beyond the fixed pitches of traditional Western scales. This expressive flexibility is one of the defining characteristics of blues-influenced music.