Amazon now has its own version of Spotify and it's called Amazon Music Unlimited. The subscription music streaming service is similar to what's offered by Spotify, Apple, Google and all the others. You can instantly stream any song you want on-demand starting at $10 a month but Amazon has a twist on the price. If you are a member of Prime, the monthly fee is knocked down to $8 a month and if you want to go cheaper, there's also a $4 a month option but for that crazy low price, there's a catch. You can only listen to songs on Amazon Echo smart speaker. 

The integration with Echo is the real hook here. Echo's assistant Alexa now understands new voice commands to play songs. You can ask to play a mix of genre or mood bass tracks from a specific decade or year and if you don't know the name of the song, well Alexa can still play it if you can rattle off some of the lyrics. If you're thinking, wait didn't Amazon already have a music service? Well, not exactly. Prime subscribers had access to a limited library of music that was complimentary with a Prime membership but it doesn't have access to many songs.