Combine multiple playlists into a new one automatically to listen to all their tracks at once with ease. You already have a playlist called "Rock 90's" and another called "Rock 00's". Using this app merge both of these into a new playlist (i.e. "All Rock"). The app will also eliminate all duplicates that may occur during the merge. Open Spotify directly at your new playlist to listen to all your music combined.
Be sure to always choose a new (empty) destination playlist otherwise the contents of the chosen playlists will be erased/replaced!

* The name Spotify© and the Spotify© logo are properties of Spotify AB. This app is not provided neither affiliated with Spotify AB.