https://www.cnet.com/news/sonos-users-can-now-control-spotify-with-their-voice-hands-on/

Now Sonos owners can ask Alexa for artists, songs, albums or playlists and have Spotify serve up the music. The Sonos One originally launched with a choice of either Amazon Music or Pandora as the default music service, but Spotify went missing.

The Alexa app, which is used to set up which music service responds to song requests, now offers a choice of Amazon Music, Pandora or Spotify as the default service. That means you don't have to add the name of the service as part of your voice command to make it work. Select Spotify as the default and you can simply say, "Alexa, play Dead Kennedys," for example, and the speaker will play a playlist of the band's most popular tracks on Spotify.