1. Open the interface of singing activities with red songs playing the main theme.

2. Click the "Fill Audio" button to pop up the audio file selection box, select the audio file you recorded, and click the "Open" button to upload the audio file.

3. Click "Submit" button. After successful submission, your activity information will be displayed on the page.

The above is the way to fill in the audio of playing the main theme, red songs and singing in a week. I hope it helps you.