How to add background music to a PPT document

I used PowerPoint to make a slide show and I wanted to add a background music to the demo, but I tried a lot of different ways in PowerPoint, and as soon as I switched to the next slide, the music stopped, could you add a background music to your PPT document? Always play to the end of the slide show.

PowerPoint does not provide a way to directly add background music, but we can do it in a flexible way. First add music to your slides in the normal way, and then right-click the horn icon, select Custom Animation in the pop-up shortcut menu, in the Custom Animation task pane, click Effect Options, in the Play Sound dialog box that opens, switch to the Effects tab, and under the Stop playing item, select the (F): After xx slide "(The middle xx is a number), in the middle of the number of boxes to enter the appropriate number can be (the number is greater than the total number of slides).