alright im an absolute noob so please give me a simple solution for this. so i put this folder of music into my sd card right (it came w the phone its a kinda dodgy unbranded 16gb but so far its worked perfectly fine so). and like okay it's all good in the hood. i open google play music. choose a song. WOAH it does not play. i go check the folder in my files. IT'S EMPTY! i actually did this like about five times now like and the files just get deleted. theyre not even hiding i plugged into the laptop and they're just GONE. they were mp3 files so i tried aac thinking it would make a difference but no my piece of **** sd card keeps deleting my songs. and btw all my old songs and stuff are TOTALLY FINE its just this ONE FOLDER and i tried ANOTHER FOLDER and it just DELETES ITSELF i never asked my phone to delete my ****. i have the android version 6.0.1 no idea which name it is but yeah. please tell me what to do to fix this as if i am a five year old child.