Chris

Apple is still the only one that works if you have a family all trying to play their own music at the same time on multiple Echo devices around a house. Apple Music allows 6 simultaneous streams but doesn’t care which Apple ID within the family group is doing it (or how many are being streamed from the same ID, as long as it doesn’t exceed 6). You can’t even use Amazon Music in this way - you can get 6 simultaneous streams on their family account but you can only have one of those accounts paired to Alexa, so only one music stream at a time.