- The keynote of the normal or "natural" scale, which has neither
flats nor sharps in its signature; also, the third note of the relative
minor scale of the same.
- C after the clef is the mark of common time, in which each measure
is a semibreve (four fourths or crotchets); for alla breve time it is
- The "C clef," a modification of the letter C, placed on any line
of the staff, shows that line to be middle C.
- As a numeral, C stands for Latin centum or 100, CC for 200, etc.