Spotify is adding group chats to the messaging service it premiered last year. The in-app messaging feature, which was released last August, works to keep users on the app instead of navigating to another platform to share content with friends. Since its introduction, Spotify has added functionality bit by bit. Earlier this month, the company added the ability to share what you're listening to in real-time . Users can also invite chat participants to join a Jam, the app’s collaborative listening tool.