In music, A, B, C, D, E, F, and G are the note names representing 7 different sounds.

In music, the ABCDEFG order from low to high is: C, D, E, F, G, A, B

These seven tones of different levels are adjacent to each other. The pitch distance between notes can be divided into semitone and whole tone. Among them, the relationship between E and F and B and C is a semitone, and the relationship between other adjacent tones is a whole tone.

When the seven basic tone levels C D E F G A B undergo a semitone change, if it is a semitone higher than the original, use a sharp (or sharp sign) (#) to indicate it; if it is a semitone lower than the original, use a flat (#) Or flat sign) (Ь) is represented; raising two semitones is represented by a double sharp sign (×); falling two semitones is represented by a double flat sign (ЬЬ). If the raised or lowered note is to be restored to its original pitch position, it will be represented by a base number (□).

Extended information:

Group of tone names

The 7 basic tone levels are repeated repeatedly to form the entire musical sequence. The sequence of notes starting from C to C, an octave higher, is called a group. A group of sounds usually starting from the C sound in the second space of the bass clef, marked with lowercase Latin letters c, d, e, f, g, a, b, is called a small character group, and each group upwards is called One group of small characters, two groups of small characters, etc.;

The groups going down are marked with capital Latin letters in turn, called the group of large characters, one group of large characters, the second group of large characters, etc. The small C in the group is located on the central plus line of the large staff, so it is called middle C; it is also located in the center on the keyboard.

Baidu Encyclopedia—sound names