If you are not paying the premium, even though you are paying for prime, you are required to buy Music Unlimited to buy some music. REALLY! So if I am going to pay I will pay someone other than Amazon as I think this is crazy and typical of companies like AMAZON to improve their bottom line.
You think just because you pay for Amazon Prime free 2 day shipping on most items, as well as some free video and music, as well as other amenities, that you should also have access to every video and music selection/subscription that Amazon owns?
These are stand alone subscription services, and not included for free in the Amazon Prime service.