I am having a very frustrating and mysterious problem.  I have a Denon AVR, and I occasionally use Spotify Connect to play music on it.  Recently, I have been coming home or waking up to find that my Denon AVR started playing Spotify music by itself.

In each case, the AVR was turned off before I left or went to sleep.  The music that is playing is garbage that I would never listen to.  Today I turned on the Spotify app on my Mac to see what exactly was playing.  It was an album (again, not one that I have ever listened to or would).  Although I could see the tracks in my Play Queue, oddly none of them appeared in my History.  I wonder if that suggests that the problem is with another account?  My wife and son also use Spotify, but do not use Spotify Connect with this speaker.

For now I have disabled the feature on my Denon AVR that allows it to turn on when it is in stand-by mode.  But this is clearly a Spotify problem.  How can I prevent this from happening?  Or at least, how can I see what device is issuing Spotify Connect directives in the middle of the night?

If I am unable to solve this, I plan to get rid of our Spotify Premium family plan.  Since Spotify Premium is needed for connect, I think that will fix the problem.

I have found some reports from Sonos users that sound similar... but nothing from Denon users.

https://en.community.sonos.com/troubleshooting-228999/music-from-spotify-starts-playing-by-itself-no...

https://en.community.sonos.com/troubleshooting-228999/why-does-my-sonos-system-turn-itself-on-playin...

Plan

Premium

Country

USA 

Device

Samsung Galaxy S8, iPhone XS, MacBook Pro