Amazon Music's mobile app introduced Alexa voice control back in September, but there was a catch: you still had to tap a button to take action. Why couldn't you just talk to it like you would an Echo speaker? You can now. Both the Android and iOS apps just received hands-free Alexa control, with many of the same commands that you'd use with other Alexa devices. You only have to start talking to listen to a favorite playlist or queue up a song you don't remember by name.