The best way is to put the microphone on the tip of the nose or chin, so that the wheat will not be sprayed, and the waveform will be much larger. Take precautions against wind when recording, and avoid a lot of sonic boom (that is, the sound of wheat spraying).

Please record with headphones, don't record with the stereo on, and don't record the accompaniment in a dry voice.

3. Silence is forbidden where you don't sing! For example, don't mute the dry notes in the prelude and interlude, or you won't be able to collect your noise samples.

4. When recording, don't overload the sound. Someone asked what is overload? Overload means that your speakers will squeak and vibrate. Listen and see that the green tape (checkpoint) has turned red.