What's the key of C?

1. The key C is a natural major of music that begins with the key C. It consists of C, D, E, F, G, A and B, and it is a key without sharp and flat signs.

2. D key is a natural major based on D(re), and English is Dmajor, which consists of D, E, # F, G, A, B and # C. Key signature has two sharp horns, the relative minor is B minor and the parallel minor is D minor.

3. E key is a natural major based on E key, which consists of E, F? 、G? 、A、B、C? 、D? And e, key signature has four trombones. The relative minor is C sharp minor and the parallel minor is E minor.

4. The F key is a natural major based on the F key, which consists of F, G, A,? B, C, D, E and F, and key signature has a flat sign. The relative minor is D minor and the parallel minor is F minor. Key signature in F can be obtained by lowering the B note of the third line of the staff by two degrees.

5. The G key is a natural major with G as the center tone, which consists of G, A,? B, c, d, e, # f and g. The parallel minor is E minor, and it is counted as a sharp sign in the staff, which is equivalent to Fa in C major.