Step 1: To invite someone else to listen along with you while Spotify is playing, click the plus sign (+) in the text box. This can be sent via a Direct Message, Group Direct Message, or even a particular channel.
Step 2: Before sending your invitation, you can add a comment and view a message preview of it. Your friends can click Join once you offer them an invitation to join you in listening to your favorite music.
Step 3: When you switch songs, the invite link will also change because it is dynamic. If you pause your music, the invite will indicate that the session is over and will refresh once you start it up again.
Step 4: On the bottom left of your app, you can see which of your friends are also listening.