iTunes all music gone

Hello,

All music is gone from my Windows iTunes. I used iTunes to put my own music collection (cd's which are still not on Apple Music) on Apple Music, so I can listen to it from all sorts of devices wherever I am.

But after I updated it, I only find podcasts in iTunes. What the peep happened?

I ask this because I can't seem to upload any music through Apple Music. I found out Apple Music can also upload to your own iCloud, but it just doesn't do the trick.