C key, d key, e key, f key and g key are the musical scales. The pitch position of the tone sequence composed of the interval structure that conforms to the basic scale is called the key. C, D, E, F, G, A, and B represent the seven tones 1, 2, 3, 4, 5, 6, and 7 respectively, and the key of C with C as the main tone is 1, 2, 3, 4, 5, 6, 7. The key of G with G as the main note is 2, 3, 4, 5, 6, 7, 1.

The naming of the key is based on the tonic. For example, if there are 7 natural tone levels arranged in order starting from C, it is the key of C. If the key of C is moved one perfect fifth higher, it will be G as the main key. In the key of G, moving the C key one perfect fifth lower is the key of F with F as the main note. Different keys are generally distinguished by the key signatures indicated after the clef at the beginning of the score. The specific forms of applying different keys in musical works Just various styles.

Extended information

There are three common major modes:

1. It is the natural major mode.

It is also the most commonly used in daily life. The scale structure is whole and half, whole and whole and half. It is the basic form of the major key, with brilliant, clear colors.

2. Use major harmonies sparingly.

Lower the VI note of the natural major key by a semitone, so that there is an augmented second between the VI and VII notes. The color is darker, softer, a bit like a minor key.

3. Melody major. Use sparingly.

When the melody goes up, it is the same as the natural major, but when it goes down, the two tone levels of VI and VII are lowered by a semitone.