If you want to view all your music folder on your Mi 8, you can try android assistant tool. After connecting Mi 8 to pc via usb cable, the tool will scan out all data on it, including the music files. Then you can view them easily.
Hi there,
Third-party Android Assitant program can help you find your music folder,when you connecting your MI 8 to computer,the program will display all contents of your phone.then you can see you music directly.