A full screen ad. For Apple Music. The app I'm in.
Edit: And I want to make sure I'm clear here. I pay for iTunes Match. I have a nice music library, and it's in iTunes, so I like having it with me where I go when I want to listen to something from that. So, I'm in Apple Music, trying to play music I own. And it's synced through a service I've already paid for. And Apple has the audacity to ask for more money? Stop me from playing my music after I've already paid them and deal with an annoying full-screen popup Ad.
Opened Spotify, and is synced up with what my Desktop is doing.
It's fine you disagree. It's just Apple has done everything they can to make me hate using Music.