Citation:
A blue note is a note that is sung or played at a slightly lower pitch than those of the major scale, often used in blues and jazz music to create a sense of expressiveness and emotional depth. This concept typically involves flattening the third, fifth, and seventh degrees of the scale, giving it a unique sound that is distinct from traditional major or minor scales. These notes are essential for conveying the characteristic sound and feeling of blues music, which often focuses on themes of sorrow and heartache.