Got to say I'm with
@boltjames on this AM subscription thing. I too have a 25,000+ track music library, free Internet radio (TuneIn Pro) for when those tracks are not what I want to listen to, and can't see the value in paying $10 a month for someone to guess at what I might like to hear, versus picking $10 worth of tracks and being able to transfer them to Micro-SD card for playback away from Apple's ecosystem.
If people neglect to build up their personal collection of non-DRM music, they'll forever be tied to Apple products no matter where they might lead.
I think AM is a short-sighted quick fix that'll leave many young folk without their own music collection, and having to pay out for their favourite tracks in the future anyway.
Good luck to you guys, but I don't believe streaming is something you should be paying for unless you can copy the tracks to other forms of media.