C♯ Major is a musical key that consists of seven notes: C♯, D♯, E♯, F♯, G♯, A♯, and B♯. It is known for its bright and uplifting sound, often used in various genres of music, including classical, pop, and rock. The key signature of C♯ Major has seven sharps, making it one of the keys with the most sharps in Western music.
In terms of its scale, C♯ Major follows the pattern of whole and half steps typical of major scales. The tonic, or root note, is C♯, which serves as the foundation for melodies and harmonies in this key. Composers like Ludwig van Beethoven and Johann Sebastian Bach have utilized C♯ Major in their works, showcasing its vibrant character.