Is there a cheap/easy way to have an Alexa/Google music/Spotify song request button? - eviltoast

I have an amp outside connected to some speakers. Right now I control it via Bluetooth from my phone and use Spotify to play the music. I’d love if there was a way to integrate Alexa or another helper so the kids can request songs when I’m not home. Is this feasible? Looking for cheap solutions ideally. My amp can take RCA audio in or Bluetooth.