In the webpage interface with background music, click the "Tools" menu bar of the browser and select "Developer Tools" from the drop-down menu to enter.

In the Developer Tools interface that opens, switch to the NetWord tab. As shown in the figure:

Refresh the page, and click the "Size" list item to make the column in descending order of "Content Size".

Because the music file is relatively large, it is easy to find the corresponding music file on the left, and it is in MP3 format. Right-click the corresponding music file and select Copy Link Address from the pop-up right-click menu.

Click the "sogou Expressway Downloader" button in the upper right corner of the browser interface to open the "Download Manager" interface.

From the opened download manager interface, click the "New Download" button in the lower right corner, and the music download interface will automatically pop up, as shown in the figure: here you can paste the music download address into the "Website" to download music files.