Blues scale

The blues scale is a musical framework used in blues and jazz that adds expressive, soulful notes to a basic scale, often a minor pentatonic. It includes five core notes and introduces "blue" notes—slightly bent or flattened pitches—that create a distinctive, emotional sound. These blue notes give the music its characteristic "bluesy" feel. Think of the scale as a set of building blocks that, when played in sequence, evoke feelings of longing, sadness, or groove, making it a fundamental element for expressive improvisation and songwriting within the blues genre.