How did you get Spotify to play? Are you using an official Spotify client? Casting Spotify via code/home assistant somehow? When I tried to do something similar (was trying to run a cron job to cast a particular playlist from Spotify to play on my chromecast audio/speakers every morning) maybe 8 years ago I couldn’t figure out how. Maybe it’s easier now?
There is also an NFC tag that will turn off all the lights and turn on a disco ball :-).