The B major scale is a musical scale that consists of the notes B, C#, D#, E, F#, G#, and A#. It is built using a specific pattern of whole and half steps: whole, whole, half, whole, whole, whole, half. This scale is often used in various music genres, including classical, pop, and jazz. In terms of key signature, the B major scale has five sharps. These sharps are F#, C#, G#, D#, and A#. Musicians often use this scale to create melodies and harmonies, making it an essential part of music theory and composition.