Last week I booted up my laptop for the first time in months, iTunes ran in the background for a few hours and then I shut it off, today I finally noticed I was listening to my own library and not a station in Apple Music, (I have a huge collection <3000+ songs>) I'm on cellular and am streaming to my library, iTunes is off and I'm away from my house, songs disappear when switching on airplane mode and has nothing to do with home sharing? Is it just me or did my iTunes upload my library for remote playback?!