1. A networked microphone device comprising: a microphone; a network interface; one or more processors; tangible, non-transitory computer-readable media having stored therein instructions executable by the one or more processors to cause the networked microphone device to perform a method comprising: receiving, via the microphone, voice data indicating a voice input; identifying, from among multiple voice services registered to a media playback system, a voice service to process the voice input; and causing, via the network interface, the identified voice service to process the voice input.