What is the meaning of the term "C note" in music and how does it relate to musical composition and performance?

In music, a "C note" refers to the musical note C. It is a specific pitch on the musical scale. In musical composition and performance, the C note is used as a reference point for creating melodies, harmonies, and chords. It serves as a fundamental building block in creating music and is essential for establishing key signatures and tonal centers.