What is the leading tone in a major scale?

The leading tone in a major scale is the seventh scale degree. This term refers to the note that is one half step below the tonic, or the first scale degree. The role of the leading tone is vital in tonal music as it creates a strong resolution to the tonic. For example, in the C major scale, the leading tone is B, which resolves up to C, the root note of the scale. This tension and resolution are central to establishing a sense of direction and structure within a musical piece. Understanding the function of the leading tone helps musicians and composers create effective melodic lines and harmonies.