{
  services.home-assistant = {
    extraComponents = [ "snapcast" ];
    config = {
      "automation piano" = {
        alias = "piano";
        trigger = {
          platform = "state";
          entity_id = "media_player.music_piano_snapcast_client";
          attribute = "is_volume_muted";
        };
        condition = [
          {
            condition = "template";
            value_template = "{{ trigger.from_state.state != 'unavailable' }}";
          }
          {
            condition = "template";
            value_template = "{{ state_attr('media_player.music_piano_snapcast_client', 'is_volume_muted') == true or state_attr('media_player.music_piano_snapcast_client', 'is_volume_muted') == false }}";
          }
        ];
        action = {
          service = "switch.turn_on";
          target = {
            entity_id = "switch.piano_switch_power";
          };
        };
      };
    };
  };
}