Alexa can control playback in Amazon Music’s iOS and Android apps
https://arstechnica.com/gadgets/2017/09/you-can-now-ask-alexa-to-control-tunes-in-amazon-musics-mobile-app/
Amazon announced today that its virtual assistant Alexa has a new home in the Amazon Music app. Now, users of the Android and iOS Amazon Music apps in the US, UK, Germany, and Austria can ask Alexa to play songs using voice commands. There's no word yet on when the feature will roll out to users in other locations.