Editing C (musical note) (section)

==Designation by octave==
{|class="wikitable"
![[Scientific pitch notation|Scientific]] designation
![[Helmholtz pitch notation|Helmholtz]] designation
!Octave name
!Frequency (using [[A440 (pitch standard)|A&nbsp;440]] [[equal temperament]])
![[MIDI]] note  number
!Other names
!Audio
|-
|C<sub>−1</sub> || C͵͵͵ or ͵͵͵C or CCCC || Octocontra||align="right"| {{#expr:440 * 2^((0-69)/12) round 3}}&nbsp;Hz
|0|| Quadruple Low C (64&nbsp;ft. organ pipes) ||[[File:C8.18.mid|100px]]
|-
|C<sub>0</sub> || C͵͵ or ͵͵C or CCC || Subcontra ||align="right" | {{#expr:440 * 2^((12-69)/12) round 3}}&nbsp;Hz
|12|| Triple Low C (32&nbsp;ft. organ pipes), [[Octobass]] C ||[[File:C16.35.mid|100px]]
|-
|C<sub>1</sub> || C͵ or ͵C or CC || Contra ||align="right" | {{#expr:440 * 2^((24-69)/12) round 3}}&nbsp;Hz
|24|| Double Low C (16&nbsp;ft. organ pipes), Double Bass w/ either Low C Extension, 5 Strings, or in 5ths Tuning ||[[File:C32.7.mid|100px]]
|-
|C<sub>2</sub> || C || Great ||align="right" | {{#expr:440 * 2^((36-69)/12) round 3}}&nbsp;Hz
|36|| Low C, [[cello]] C, [[eight foot pitch|8{{prime}} C]] (see [[Organ stop#Pitch and length|organ pipe length]]) ||[[File:C65.41.mid|100px]]
|-
|C<sub>3</sub> || c || Small ||align="right" | {{#expr:440 * 2^((48-69)/12) round 3}}&nbsp;Hz
|48||4{{prime}} C or Tenor C (organ), [[viola]] C, Tenor Middle C (Tenor Voice) ||[[File:C130.81.mid|100px]]
|-
|C<sub>4</sub> || c{{prime}} || One-lined ||align="right" style="background-color:#ccf"| {{#expr:440 * 2^((60-69)/12) round 3}}&nbsp;Hz 
|60|| '''Middle C''' for Sopranos, 2&nbsp;ft. organ pipes ||[[File:Middle C.mid|100px]]
|-
|C<sub>5</sub> || c{{prime}}{{prime}} || Two-lined ||align="right" | {{#expr:440 * 2^((72-69)/12) round 3}}&nbsp;Hz
|72|| Treble C, Tenor High C (written an octave higher for [[tenor|tenor voices]]),<ref>[https://www.nytimes.com/2007/09/09/weekinreview/09wakin.html "The Note That Makes Us Weep"] by Daniel J. Wakin, ''[[The New York Times]]'', September 9, 2007</ref> 1&nbsp;ft. organ pipes ||[[File:Perfect octave on C.mid|100px]]
|-
|C<sub>6</sub> || c{{prime}}{{prime}}{{prime}} || Three-lined ||align="right" |{{#expr:440 * 2^((84-69)/12) round 3}}&nbsp;Hz
|84||High C ([[soprano]])||[[File:Perfect fifteenth on C.mid|100px]]
|-
|C<sub>7</sub> || c{{prime}}{{prime}}{{prime}}{{prime}} || Four-lined ||align="right" |{{#expr:440 * 2^((96-69)/12) round 3}}&nbsp;Hz
|96|| Double high C{{citation needed|date=February 2019}} ||[[File:C2093.01.mid|100px]]
|-
|C<sub>8</sub> || c{{prime}}{{prime}}{{prime}}{{prime}}{{prime}} || Five-lined ||align="right" |{{#expr:440 * 2^((108-69)/12) round 3}}&nbsp;Hz
|108||Eighth octave C, triple high C||[[File:Eighth octave on C.mid|100px]]
|-
|C<sub>9</sub> || c{{prime}}{{prime}}{{prime}}{{prime}}{{prime}}{{prime}} || Six-lined ||align="right" |{{#expr:440 * 2^((120-69)/12) round 3}}&nbsp;Hz
|120|| Quadruple high C ||
|-
|C<sub>10</sub> || c{{prime}}{{prime}}{{prime}}{{prime}}{{prime}}{{prime}}{{prime}} || Seven-lined ||align="right" |{{#expr:440 * 2^((132-69)/12) round 3}}&nbsp;Hz
|N/A|| Quintuple high C ||
|}