B♭ (musical note)

B (B-flat; also called si bémol) is the eleventh step of the Western chromatic scale (starting from C). It lies a diatonic semitone above A and a chromatic semitone below B, thus being enharmonic to A, even though in some musical tunings, B will have a different sounding pitch than A. B-flat is also enharmonic to Cdouble flat.

When calculated in equal temperament with a reference of A above middle C as 440 Hz, the frequency of the B above middle C is approximately 466.164 Hz. See pitch (music) for a discussion of historical variations in frequency.

While orchestras tune to an A provided by the oboist, wind ensembles usually tune to a B-flat provided by a tuba, horn, or clarinet.

In Germany, Russia, Poland and Scandinavia, this pitch is designated B, with 'H' used to designate the B-natural. Since the 1990s, B-flat is often denoted Bb or "Bess" instead of B in Swedish music textbooks. Natural B is called B by Swedish jazz and pop musicians, but still denoted H in classical music. See B (musical note) for an explanation.

Designation by octave

Scientific designation Helmholtz designation Octave name Frequency (Hz)
B−1 B͵͵͵ or ͵͵͵B or BBBB Subsubcontra 14.568
B0 B͵͵ or ͵͵B or BBB Subcontra 29.135
B1 B͵ or ͵B or BB Contra 58.270
B2 B Great 116.541
B3 b Small 233.082
B4 b One-lined 466.164
B5 b′′ Two-lined 932.328
B6 b′′′ Three-lined 1864.655
B7 b′′′′ Four-lined 3729.310
B8 b′′′′′ Five-lined 7458.620
B9 b′′′′′′ Six-lined 14917.240
B10 b′′′′′′′ Seven-lined 29834.481

Scales

Common scales beginning on B

Diatonic scales

  • B Ionian: B C D E F G A B
  • B Dorian: B C D E F G A B
  • B Phrygian: B C D E F G A B
  • B Lydian: B C D E F G A B
  • B Mixolydian: B C D E F G A B
  • B Aeolian: B C D E F G A B
  • B Locrian: B C D E F G A B

Jazz melodic minor

See also

A♯ (musical note)

A♯ (A-sharp), or la dièse, is the eleventh semitone of the solfege. In some countries (where B is known as H) it is informally called B.

This note lies a chromatic semitone above A and a diatonic semitone below B, thus being enharmonic to si bémol or B♭ (B-flat).

When calculated in equal temperament with a reference of A above middle C as 440 Hz, the frequency of the A♯ above middle C is approximately 466.164 Hz. See pitch (music) for a discussion of historical variations in frequency.

B-flat

B-flat or B♭ may refer to:

B♭ (musical note)

B♭ major

B♭ minor

b-flat Acoustic Music & Jazzclub, Berlin, Germany

B (musical note)

B, also known as Si, Ti, or, in some European countries, H, is the seventh note of the fixed-Do solfège. Its enharmonic equivalents are C♭ and A.

When calculated in equal temperament with a reference of A above middle C as 440 Hz, the frequency of Middle B (B4) is approximately 493.883 Hz. See pitch (music) for a discussion of historical variations in frequency.

C (musical note)

C (Italian, French: Do) is the first note of the C major scale, the third note of the A minor scale (the relative minor of C major), and the fourth note (F, A, B, C) of the Guidonian hand, commonly pitched around 261.63 Hz. The actual frequency has depended on historical pitch standards, and for transposing instruments a distinction is made between written and sounding or concert pitch.

In English the term Do is used interchangeably with C only by adherents of fixed-Do solfège; in the movable Do system Do refers to the tonic of the prevailing key.

Notes of the chromatic scale

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