C sharp Your browser does not support the audio element. [ English ] Definition The raised first note (tonic) in the C major scale. It is normally called Di. The frequencies of the audible pitches of C sharp are notated below. See Also [French] Ut dièse [French] Do dièse (m) [German] Cis (n) [Italian] Do diesis (m) [Spanish] Do sostenido (m) Share Share on Facebook (opens in a new tab) Share on X (opens in a new tab) Last Updated: 2016-05-20 18:48:36