The production of accompaniment tape is as follows:

1. Choose the appropriate music software: Choose a powerful music production software, such as FL Studio, Ableton Live, etc.

2. Import audio files: Import the audio files to be used for accompaniment into the music software.

3. Separate audio tracks: Use the audio track separation function in the music software to separate the vocals and background music into two different audio tracks.

4. Adjust the volume and balance: Adjust the volume and balance of the background music and vocals as needed to make them sound harmonious.

5. Add effects: You can add various effects in music software, such as reverb, compression, equalizer, etc., to improve the sound quality and expressiveness of the accompaniment.

6. Export accompaniment tape: Export the prepared accompaniment tape as an audio file. You can choose common audio formats, such as MP3, WAV, etc.

Method for lowering the accompaniment:

1. Open the music software: choose a powerful music production software, such as FL Studio, Ableton Live, etc.

2. Import the accompaniment file: Import the accompaniment file to be down-tuned into the music software.

3. Select the pitch-down tool: Select the pitch-down tool in the music software. Common pitch-down tools include pitch changers, transmissions, etc.

4. Perform the lowering operation: select the number and method of lowering as needed. Common lowering methods include whole-tone lowering, semi-tone lowering, etc. After selecting the lowering mode, you can adjust the accuracy and speed of the lowering to achieve the best lowering effect.

5. Audition and adjustment: After performing the down-tuning operation, you can audition the down-tuning effect of the accompaniment, and adjust the down-tuning parameters and effects as needed to achieve the best down-tuning effect.

6. Export the down-tuned accompaniment: Export the down-tuned accompaniment as an audio file. You can choose common audio formats, such as MP3, WAV, etc.

7. Play on an instrument: If the accompaniment is played on an instrument, you can try playing on the instrument and lower the tonality by adjusting your playing skills and fingerings. This method requires certain playing skills and experience.

8. Use the tuner: The tuner is a tool used to adjust the pitch. You can lower the tonality of the accompaniment by setting the tuner to a lower pitch. This method requires using a tuner and making sure the pitch is adjusted correctly.

9. Use audio editing software: You can use audio editing software to adjust the pitch and frequency of the accompaniment. By importing audio files into audio editing software, you can edit, change speed, change pitch, etc. to achieve the effect of lowering the pitch.