C (musical note)
C or 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.
Historically, concert pitch has varied.
After the A440 pitch standard was adopted by musicians, the Acoustical Society of America published new frequency tables for scientific use.
A movement to restore the older A435 standard has used the banners "Verdi tuning", "philosophical pitch" or the easily confused scientific pitch.
"Middle C" redirects here.
For the novel, see Middle C (novel).
While the expression Middle C is generally clear across instruments and clefs, some musicians naturally use the term to refer to the C note in the middle of their specific instrument's range.
C4 may be called Low C by someone playing a Western concert flute, which has a higher and narrower playing range than the piano, while C5 (523.251 Hz) would be Middle C. This technically inaccurate practice has led some pedagogues to encourage standardizing on C4 as the definitive Middle C in instructional materials across all instruments.
In vocal music, the term High C (sometimes less ambiguously called Top C) can refer to either the soprano's C6 (1046.502 Hz; c′′′ in Helmholtz notation) or the tenor's C5; both are written as the C two ledger lines above the treble clef but the tenor voice sings an octave lower.
The term Low C is sometimes used in vocal music to refer to C2 because this is considered the divide between true basses and bass-baritones: a basso can sing this note easily, whereas other male voices, including bass-baritones, typically cannot.
Designation by octave
|Scientific designation||Helmholtz designation||Octave name||Frequency (Hz)||Other names||Audio|
|C−1||C͵͵͵ or ͵͵͵C or CCCC||Octocontra||8.176||Play (help·)|
|C0||C͵͵ or ͵͵C or CCC||Subcontra||16.352||Play (help·)|
|C1||C͵ or ͵C or CC||Contra||32.703||Play (help·)|
|C2||C||Great||65.406||Low C, cello C, 8' C (see organ pipe length)||Play (help·)|
|C3||c||Small||130.813||4' C or tenor C (organ), viola C||Play (help·)|
|C4||c′||One-lined||261.626||Middle C||Play (help·)|
|C5||c′′||Two-lined||523.251||Treble C, high C (written an octave higher for tenor voices)||Play (help·)|
|C6||c′′′||Three-lined||1046.502||High C (soprano)||Play (help·)|
|C7||c′′′′||Four-lined||2093.005||Double high C||Play (help·)|
|C8||c′′′′′||Five-lined||4186.009||Eighth octave C, triple high C||Play (help·)|
|C9||c′′′′′′||Six-lined||8372.018||Quadruple high C||Play (help·)|
|C10||c′′′′′′′||Seven-lined||16744.036||Quintuple high C||Play (help·)|
20,000 hertz is the start of the ultrasound in healthy young adults.
Note that for a classical piano and musical theory, the middle C is usually labelled as C4; However, in the MIDI standard definition (like the one used in Apple's GarageBand), this middle C (261.626 Hz) is labelled C3.
In practice, a MIDI software can label middle C (261.626 Hz) as C3-C5, which can cause confusions, especially for beginners.
Common scales beginning on C
- C Major: C D E F G A B C
- C Natural Minor: C D E♭ F G A♭ B♭ C
- C Harmonic Minor: C D E♭ F G A♭ B C
- C Melodic Minor Ascending: C D E♭ F G A B C
- C Melodic Minor Descending: C B♭ A♭ G F E♭ D C
- C Ionian: C D E F G A B C
- C Dorian: C D E♭ F G A B♭ C
- C Phrygian: C D♭ E♭ F G A♭ B♭ C
- C Lydian: C D E F♯ G A B C
- C Mixolydian: C D E F G A B♭ C
- C Aeolian: C D E♭ F G A♭ B♭ C
- C Locrian: C D♭ E♭ F G♭ A♭ B♭ C
Jazz melodic minor
- C Ascending Melodic Minor: C D E♭ F G A B C
- C Dorian ♭2: C D♭ E♭ F G A B♭ C
- C Lydian Augmented: C D E F♯ G♯ A B C
- C Lydian Dominant: C D E F♯ G A B♭ C
- C Mixolydian ♭6: C D E F G A♭ B♭ C
- C Locrian ♮2: C D E♭ F G♭ A♭ B♭ C
- C Altered: C D♭ E♭ F♭ G♭ A♭ B♭ C
Credits to the contents of this page go to the authors of the corresponding Wikipedia page: en.wikipedia.org/wiki/C (musical note).