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How many pitches are in the chromatic scale?
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The universality and innate nature of music, and the pentatonic scale, as demonstrated by singer Bobby McFerrin.
The chromatic scale consists of 12 pitches.12
In Western music, these 12 notes serve as the foundational material for melodies, harmonies, and various other scales. They are organized by moving in half steps (or semitones), which are the smallest intervals typically used in this musical tradition. On a piano keyboard, these 12 pitches correspond to the combination of all white and black keys within an octave.1342
While the 12-note system is highly influential, it is important to note that it is not universal; other musical traditions may employ different tuning systems or utilize intervals smaller than a semitone, known as microtonal music.1