I am a new iOS user with my first iphone (SE). I have a 64 GB archive of music, organized into directories, on my mac laptop. I want to transfer this entire music library, which I own, to my new iphone but I am a little worried about how this works ... every HOWTO from apple is about "dragging and dropping" a file or two ... or an album ... How do I import a massive directory, which contains many multiple subdirectories, into my iphone ? What happens to the directory structure ? Will I be able to view the files in itunes *by their filename* ? In fact, is it even possible to see a directory in my laptops itunes ? I am not going to drag and drop 30,000 files ... Can anyone steer me in the right direction here ? Thanks.