Because a single photo is still, it is impossible to add background music to a photo alone. If you want to add music to a photo, you can process it into a small video and then add music to the video. The specific method is (using software TapSlide):

1. First, open the installed TapSlide software and click Add Picture on the home page.

2. Then the page will jump to the mobile phone photo selection page, where you can select photos to add music. (It should be noted that due to the limitation of video length, at least 6 photos were selected. )

3. After selecting the photo, click Start to enter the page of soundtrack selection, and then click the music file to be added to the video.

4. After adding the soundtrack, you can click Save to Album on the page to start exporting the made small video.

5. It takes some time to export the video, and the page prompts success! At this point, the background music has been successfully added to the photo.