B natural is a musical note that is one semitone higher than A and one semitone lower than C. It is represented by the letter "B" in musical notation and is part of the Western music scale. In the context of a piano, B natural is the white key located immediately to the right of A and immediately to the left of C. In music theory, B natural can be found in various scales and chords, including the B major and B minor scales. It plays a crucial role in creating melodies and harmonies, contributing to the overall sound and emotion of a piece. Musicians often use B natural in compositions across different genres.