1. C♯ (musical note)C♯ is a musical note lying a chromatic semitone above C and a semitone below D. C-sharp is thus enharmonic to D♭. It is the second semitone in the French solfège and is known there as do dièse. When calculated in equal temperament with a reference of A above middle C as 440 Hz, the frequency of C♯4 (the C♯ above middle C) is about 277.18 Hz. See pitch (music) for a discussion of historical variations in frequency.
Read “C♯ (musical note)” on English Wikipedia
Read “嬰ハ” on Japanese Wikipedia
Read “C♯ (musical note)” on DBpedia
Read “C♯ (musical note)” on English Wikipedia
Read “嬰ハ” on Japanese Wikipedia
Read “C♯ (musical note)” on DBpedia
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