Spotify is a music streaming service. You can download the app to your smartphone and play music on your phone. They have different channels with different genres of music. With the new app you can stream the music from your smartphone by Bluetooth to specially made wireless speakers in your house. This means you will not have to plug your phone into exterior speakers to hear the music. You will also be able to do other things with your phone while still listening to music.
Thanks for clarifying. That makes more sense. If you have speakers in multiple rooms, can you start a song in one room and finish it in another?