Welcome to Android Central! Which tablet! A lot of the Miscellaneous Files may be important for the normal functioning of your apps. Instead, you could try wiping the cache partition, if possible. But we need to know which device you have.
Go to My File apps > All > You can see 2 files in storage Device & SD Card> check both there is folder name Music> Select it go to option & delete it. Hope that you can delete your music file.