C major

C major is a fundamental musical key built on the note C. It uses the natural notes—C, D, E, F, G, A, and B—without any sharps or flats. This creates a bright, open sound that feels pure and straightforward. When played on a piano, it’s often the first key learned because it uses only the white keys. C major provides a versatile foundation for melodies and harmonies, making it central to many musical styles. Its simplicity and clarity make it an essential understanding point for both beginners and experienced musicians.