1. A networked microphone device comprising: one or more amplifiers configured to drive one or more speakers; a microphone array; 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: continuously recording, via the microphone array, audio into a buffer; analyzing the recorded audio using multiple wake-word detection algorithms running concurrently on the one or more processors, each wake-word detection algorithm corresponding to a respective voice assistant service; when a particular wake-word detection algorithm of the multiple wake-word detection algorithms detects, in the recorded audio, a wake-word corresponding to a particular voice assistant service, querying, via the network interface, the particular voice assistant service with a voice command following the detected wake-word within the recorded audio, wherein the voice command comprises a search query; receiving, from one or more servers of the particular voice assistant service via the network interface in response to the query, data representing search results, the search results including audio tracks corresponding to the search query, wherein the search results are unique to the particular voice assistant service among the multiple voice assistant services; and playing back at least one audio track from the search results via the one or more amplifiers configured to drive the one or more speakers.