1. First, you need to turn on the karaoke machine to ensure that it is working properly.

2. Enter the song selection interface and select the song you want to sing. In the song selection interface, there is usually a "ghost" button. Click this button to turn on the ghost function.

3. After turning on the phantom function, you can adjust the phantom effect as needed. Parameters such as the color, brightness, speed and shape of the ghost can usually be adjusted.

4. After adjusting the phantom effect, you can start singing. During the singing process, the phantom effect will change with the rhythm of the music, enhancing the visual effect of the singing.