2. First, open iTunes on your computer. As shown in the figure. Then log in to the ID account. Then plug in the phone and connect the computer. Then click Trust. Click on the mobile phone logo. Method 1: Then click on the music and drag the song to the blank space on the right. Method 2: Click Device-Cool Dog Music-Add.
3. Download a recording expert APP in your mobile phone, click the red button in the middle to start recording, continue to click the three points in the lower right corner, select the middle clip, and click the music icon to enter the soundtrack settings. After entering, click the music icon, select the background music to add, and click Save and Export in the upper right corner.
4. First, open the third-party tool, then click to shoot the video or upload the required video from the photo album in the main interface, click the soundtrack and select the required background music.
5. How to match the background music recorded by the mobile phone is as follows: Tools/materials: iPhone 1IOS 15. Mobile phone recording first enter the mobile phone recording, and then click "…" on the right. Then enter the recording settings and select "Edit Recording". At this point, you can see your own recorded audio.