First record the audio of your singing, including the adapted lyrics.
1. Open the incision and click Start Creation.
2. Go to the edit page and click Audio.
3. Click Options to extract music.
4. Select the video and click to import only the sound of the video.
Or use Tik Tok to adapt music, in fact, you can choose music in the shooting interface, but because some users upload local videos, they need to enter the editing page to set them.
After entering the editing interface of Tik Tok, you can find the function of "Select Music" in the upper right corner, and users can also add various local or online soundtracks to the video.
After the new video soundtrack is successfully set, you can also use the "cut music" function above to intercept music clips by dragging the progress bar and adapt them.