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How does a heptatonic scale differ from a pentatonic scale?
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The universality and innate nature of music, and the pentatonic scale, as demonstrated by singer Bobby McFerrin.
The primary difference between a pentatonic scale and a heptatonic scale lies in the number of distinct tones each contains within an octave.
- Pentatonic scales consist of five different tones. They are found globally and are considered by many to represent an early stage of musical development. The most common variety is anhemitonic, meaning it contains no half steps (semitones).12
- Heptatonic scales are composed of seven different tones. These are especially prominent in the world’s art-music traditions, including the tone systems of India, Iran, and the West. In Western art music, the most common heptatonic forms are the major and minor scales, which are based on the diatonic scale consisting of five whole steps and two half steps.32
While pentatonic scales are used more widely than any other formation across various cultures, heptatonic scales serve as the foundation for Western art music and various traditional systems in Asia and Africa.231