Natural Notes are a type of musical note that corresponds to the pitches produced by a vibrating string or air column without any alterations. These notes are part of the harmonic series, which includes the fundamental frequency and its overtones. In Western music, the natural notes are represented by the letters A, B, C, D, E, F, and G, repeating in higher or lower octaves. In contrast to sharp and flat notes, which modify the pitch, natural notes maintain their original frequency. They form the basis of many musical scales and are essential for understanding music theory. Musicians often use natural notes to create melodies and harmonies in various genres.