https://techcrunch.com/2018/06/06/limited-siri-support-for-music-apps-like-spotify-is-possible-in-ios-12/

Apple is finally getting a bit more friendly with third party music-streaming apps when it comes to Siri.

Music-streaming companies like Spotify will soon be able to let users utilize Siri controls to play music through their apps thanks to Apple’s newly-announced Siri Shortcuts feature in iOS 12.