What do C, D, E, F, G, A and B in music mean and what do they stand for? Better give an example.

C, D, E, F, G, A and B are the names of seven different pitches in music. These sound names correspond to the seven sounds of 1234567.

For example, the key of C is the key with C, and the scale is C-D-E-F-G-A-B. The key of D is the key with D, and the scale is D-E-F-G-A-B-C.

Each note can be raised or lowered by half or the whole note. For example, the semitone above C is D, the semitone below C is B, and the whole tone of C is D above B below. These changes can be represented by ascending and descending symbols, such as #C for ascending c and bD for descending d.

Different notes are generally distinguished by the key signature indicated after the clef at the beginning of the score, and the key signature indicates the number of semitone (#) or semitone (b), each representing a semitone. For example, a sharp semitone is F#, which means that F rises a semitone in this key, and F# is the pitch of G.

I hope this explanation can help you understand the names and tones in music.