Music is divided into seven keys, namely: C major, D major, E major, F major, G major, A major and B major.

1. C Major

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

2, D major

D major is a major based on D(re) sound, and English is D Major. It consists of D, E, #F, G, A, B and #C, and key signature has two trombones. The relative minor is B minor and the parallel minor is D minor.

3. E-flat major

E-flat major is a major mode with E-flat as do. Phonetic names have a fixed position on the keyboard and are immutable. And the roll name can be changed according to the tone. For example, in c major, let's do the c sound. D is sung as re, and so on. In E-flat major, just sing E-flat as do.

4. F major

F natural major is a major based on F, which consists of F, G, A,? B, C, D, E and F, and key signature has a flat sign. F natural major is a major based on F sound, 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. Major is characterized by the formation of a major third degree relationship between the first and third tones.

5. G-flat major

All the notes in G-flat major are lowered by a semitone. In phonetic order, that is, g, a, b, b, d, e, f and g. Let's turn it into a major by lowering the above SI, and then raise three white keys: C, D and E. ? E is? B is the third rising, so the name adjustment is B flat major, and the key drop is E flat. According to this criterion, seven major demotions are obtained: F major,? B major? E major,? A major,? D major? G major? C major.

6. A-flat major

A-flat major refers to a tonality with A-flat as the main tone (singing do). The scales are: A-flat (Do), B-flat (Re), C-flat B(re) C(mi), D-flat (FA), E-flat (So), F-flat (La), G-flat (Do), and the ones in brackets are

7、? B-flat major

There are two flat signs in B-flat major. 7(Ti) and 3(Mi). ? The key is the fixed height of music, key signature is the key mark, written at the beginning of each staff, and the rising and falling marks behind clef are key signature.

Baidu Encyclopedia-24 major tones

Baidu Encyclopedia-Major

Baidu Encyclopedia-Seven Tones.