I switched from a Blackberry Z30 to a S7 and when I switched my music I could find it for a while and now it's all gone , I have a few titles but it can't find the files
Welcome to Android Central! It's important to know the directory that contains the music files. If you have any kind of "cleaner" app installed, it might automatically clear out certain directories (like the Downloads directory) after a period of time. This kind of thing happens with LG's Smart Clean feature.