diff --git a/ruby/lib/jam_ruby/models/music_session.rb b/ruby/lib/jam_ruby/models/music_session.rb
index 2ed761e4e..e7c6cece2 100644
--- a/ruby/lib/jam_ruby/models/music_session.rb
+++ b/ruby/lib/jam_ruby/models/music_session.rb
@@ -899,6 +899,18 @@ module JamRuby
       Recording.where(music_session_id: self.id)
     end
 
+    def self.cleanup_old_sessions
+      session__started = "(music_sessions.scheduled_start > NOW() - '12 hour'::INTERVAL AND music_sessions.started_at IS NULL)"
+
+      # keep started sessions that are not finished yet
+      session_started_not_finished = "(music_sessions.started_at IS NOT NULL AND music_sessions.session_removed_at IS NULL)"
+
+      # let session be restarted for up to 2 hours after finishing
+      session_not_finished = "(music_sessions.session_removed_at > NOW() - '2 hour'::INTERVAL)"
+
+      MusicSession.where()
+    end
+
     def end_history
       self.update_attribute(:session_removed_at, Time.now)
 
diff --git a/web/app/views/dialogs/_banner.html.slim b/web/app/views/dialogs/_banner.html.slim
index 90f752eb2..1e44d16bc 100644
--- a/web/app/views/dialogs/_banner.html.slim
+++ b/web/app/views/dialogs/_banner.html.slim
@@ -39,17 +39,15 @@ script type='text/template' id='template-app-in-read-only-volume'
 
 script type='text/template' id='template-shutdown-prompt'
   .shutdown-prompt
-    | We strongly recommend that you leave the JamKazam application running in the background.
-    | This is a very lightweight app that will not disrupt your use of your computer and other applications, and leaving this app running will deliver the following benefits to you:
+    | You might consider leaving the application in the background for a couple of reasons:
     ul
-      li
-        span.definition Scoring Service
-        = '- If you leave the app running, there is a service that can check your Internet latency to other JamKazam users. This is critical data that will guide you on which musicians and which sessions will offer a good online play experience.'
       li
         span.definition Recordings
-        = '- If you leave the app running, any recordings that you and others have made during sessions can be mastered - i.e. uploaded, mixed on our servers, and downloaded back to your computer - so that you have high quality versions of your recordings available.'
+        = '- If you leave the app running after a session completes, any recordings that you and others have made during sessions can be mastered - i.e. uploaded, mixed on our servers, and downloaded back to your computer - so that you have high quality versions of your recordings available.'
+      li
+        span.definition Friends
+        = '- You can open the app and check your notifications from friends at any time.'
 
-    | Please consider leaving this lightweight app running in the background for your own benefit, thanks!
 
 script type='text/template' id='template-mixer-mode-change'
   .mixer-mode-change