@Google I've been a Google Play Music subscriber for years now and when I subscribed I got YouTube Premium (Red) included with my subscription and was grandfathered in. Now that Play Music is going away will I lose ad free YouTube even though I'll be subscribed to YouTube Music?
If you signed up for the grandfathered GPM membership, we’ll convert it to the equivalent tier of YT or YT Music Premium. This means you'll continue enjoying the same price and benefits (like ad-free streaming) after the migration. Here's more: http://yt.be/help/zBgm