B (musical note)

B, Tsi, Ti or Si is a musical note and is the first note of the B major scale.

Designation by octave

Scientific designation	Helmholtz designation	Octave name	Frequency (Hz)
B₋₁	B͵͵͵ or ͵͵͵B or BBBB	Subsubcontra	15.434
B₀	B͵͵ or ͵͵B or BBB	Subcontra	30.868
B₁	B͵ or ͵B or BB	Contra	61.735
B₂	B	Great	123.471
B₃	b	Small	246.942
B₄	b′	One-lined	493.883
B₅	b′′	Two-lined	987.767
B₆	b′′′	Three-lined	1975.533
B₇	b′′′′	Four-lined	3951.066
B₈	b′′′′′	Five-lined	7902.133
B₉	b′′′′′′	Six-lined	15804.266
B₁₀	b′′′′′′′	Seven-lined	31608.531

C♭

C♭ is the same pitch as B but is not usually seen as the same. It is used in an instance where B♭ comes before a B natural and a C♭ is used in place of the B to avoid confusion.