According to Baidu’s experience query, the steps for posting videos with music on WeChat are as follows:

1. Open WeChat on your mobile phone and log in to your WeChat account.

2. Choose to shoot a video and click "Add Music" after shooting.

3. Enter the music addition list and select the music you want.

4. Click "Use" to add music.

5. After the video editing is completed, click "Send" to send the video to your friends.

"Video soundtrack" is also often called "background music" or "opening and ending music", which refers to the background music used to enhance the emotional color, atmosphere and rhythm of the film or video content. Audio music.