B# is a musical note that is enharmonically equivalent to the note C. In Western music, it is part of the B major and B minor scales. Although it is rarely used in practice, it can appear in certain musical contexts, particularly in theoretical discussions or complex compositions. In terms of notation, B# is represented on the staff with a note head placed on the same line as C but is indicated with a sharp symbol. This can create confusion for musicians, as they often prefer to use the more common C instead of B#.