chromaticism

Chromaticism refers to the use of notes outside the standard major or minor scales, incorporating all the nearby pitches possible within the musical universe. This creates a richer, more colorful sound, adding tension, surprise, or emotional depth to a piece. Think of it as adding subtle shades or hues beyond the basic color palette—these extra notes (called chromatic notes) help express complex feelings or create interesting melodic movement, making the music more expressive and less predictable. Chromaticism is common in many musical styles, from classical to jazz, helping to evoke mood and atmosphere.