To add background music to a dynamic album:

A. First log in to Baidu and select MP3. Then enter the desired song and click Baidu; After the search results are displayed, please click Audition;

As shown in the figure:

B, please click the copy link, and then you will be prompted to copy successfully;

C. After copying the address of the song, enter the page of making dynamic photo album. Paste the address (a paste prompt will appear with the right mouse button), and click Use to prompt that the current background music is a custom background music. This prompt indicates that you have successfully added, and then click Save Album;

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If I can help you solve the problem, I hope you can click "adopt".

Easy, will encourage us to continue to answer questions from other QQ users, thank you!