A dot added to a note means it goes up an octave.

In music, the pitch of a musical sound is a relative concept, that is, two or more musical sounds need to be compared together to draw a conclusion about which one is higher and which one is lower. For example, if the audio frequency is 440Hz, there must be a reference. For example, if you put it together with the 300Hz sound, you can know that the 440Hz sound is "treble" and the 300Hz sound is "bass".

On the other hand, human hearing is more sensitive to the frequency ratio of two tones, but less sensitive to the difference in frequency. Therefore, the frequency ratio relationship between two musical tones is the qualitative difference between the two musical tones. Extended information

The high position of the sound refers to the full head cavity ringing, which is what we emphasize as mask ringing. Get a full head cavity sound, which is a concentrated, bright, relaxed and penetrating sound. Singing feels more relaxed, and the tone is brighter and more beautiful. Using humming exercises, you can coordinate to obtain high-position sounds.

When humming, you must first feel that all the cavities have been fully opened, and then use the "hum-suck-sigh" method to hum a high-level sound at the same time.

The feeling of "sigh" is the same as that of "half-yawn-sigh". The purpose is to strengthen the flow of breath and obtain a relaxing sound.

The feeling of "sucking" is to hum a relaxed and bright sound, and then gently leave the tongue from the exit of the posterior nasal passage. At this time, the sound becomes a mellow, half-humming, half-singing "ah".