How did the songs of the square dance video get to the USB flash drive?

You can install a music player on your computer. Then, after you search the music songs you want, you can download them. When downloading, you will be prompted to change some paths and whether to download the lyrics. If you want to download the video, you can open this MV and watch the progress of the video above, which means it has been downloaded to your computer. You can find out where it is. You can also find this on Baidu first, and then there are usually download buttons below, and some of them can only be downloaded if you install its player. If you want to download, please install before downloading.