Dan Seifert, writing for The Verge:

Amazon’s long-rumored on-demand music streaming service is now available. The company is launching its new service as Amazon Music Unlimited, a on-demand competitor to the likes of Spotify, Apple Music, and Google Play Music. Amazon has done a number of things to differentiate Music Unlimited from its competitors, but the most notable one is its price: the service will be available to Amazon Prime members for $7.99 per month or $79 per year, which is cheaper than the premium options from Spotify or Apple Music. In addition, owners of one of Amazon’s voice-controlled Echo devices will be able to get the service for just $3.99 per month.

Key to me:

And while the Echo-only plan is limited to only one device (you cannot use it on your phone, PC, tablet, or even more than one Echo device), it still offers the same content library, recommendations, and other features that the full service provides.

This means, with the Echo-only plan, there’s no way to take this music on the road with me, either by car, plane, on my bike or for a run.

I find it interesting that folks who buy into the Echo-ecosystem can get a discount, but one with some significant omissions.