Samsung has decided to put together their own dedicated music app. They have already made the app available for download in the Play Store. Initially the app was only compatible for the S7 and S7 edge. The Music app was also in Beta upon initial release.
It appears that Samsung is getting closer to a final version of the app. The latest update to the Play Store app removes the Beta tag, and also adds support for both the Galaxy S6 and the Note 5. You can grab the app from the link below. The update is also available in the Galaxy Apps Store.
via Play Store