A method for operating a digital assistant of a media system, the method comprising: at one or more electronic devices comprising one or more processors and memory: while displaying, on a display, a first primary set of media items corresponding to a first primary media search query, receiving audio input containing a media-related request in natural language speech form; determining a text representation of the media-related request; performing natural language processing on the text representation to determine a primary actionable intent for the media-related request, the primary actionable intent selected from a plurality of candidate actionable intents for the media-related request; and in accordance with a determination that the primary actionable intent comprises an actionable intent of narrowing the first primary media search query: generating, based on the text representation and the first primary media search query, a second primary media search query that corresponds to the primary actionable intent and includes a set of parameter values; identifying a core set of parameter values in the set of parameter values, wherein identifying the core set of parameter values comprises identifying and disregarding one or more non-salient parameter values in the set of parameter values, and wherein the non-salient parameter values are predetermined parameter values; generating based on the identified core set of parameter values, a first secondary media search query; performing the second primary media search query and the first secondary media search query to obtain a second primary set of media items and a first secondary set of media items, respectively; and concurrently displaying, on the display, the second primary set of media items and the first secondary set of media items, wherein the display of the second primary set of media items replaces the display of the first primary set of media items, and wherein the displayed second primary set of media items is ordered before the displayed first secondary set of media items. while displaying, on a display, a first primary set of media items corresponding to a first primary media search query, receiving audio input containing a media-related request in natural language speech form; determining a text representation of the media-related request; performing natural language processing on the text representation to determine a primary actionable intent for the media-related request, the primary actionable intent selected from a plurality of candidate actionable intents for the media-related request; and in accordance with a determination that the primary actionable intent comprises an actionable intent of narrowing the first primary media search query: generating, based on the text representation and the first primary media search query, a second primary media search query that corresponds to the primary actionable intent and includes a set of parameter values; identifying a core set of parameter values in the set of parameter values, wherein identifying the core set of parameter values comprises identifying and disregarding one or more non-salient parameter values in the set of parameter values, and wherein the non-salient parameter values are predetermined parameter values; generating based on the identified core set of parameter values, a first secondary media search query; performing the second primary media search query and the first secondary media search query to obtain a second primary set of media items and a first secondary set of media items, respectively; and concurrently displaying, on the display, the second primary set of media items and the first secondary set of media items, wherein the display of the second primary set of media items replaces the display of the first primary set of media items, and wherein the displayed second primary set of media items is ordered before the displayed first secondary set of media items. generating, based on the text representation and the first primary media search query, a second primary media search query that corresponds to the primary actionable intent and includes a set of parameter values; identifying a core set of parameter values in the set of parameter values, wherein identifying the core set of parameter values comprises identifying and disregarding one or more non-salient parameter values in the set of parameter values, and wherein the non-salient parameter values are predetermined parameter values; wherein identifying the core set of parameter values comprises identifying and disregarding one or more non-salient parameter values in the set of parameter values, and wherein the non-salient parameter values are predetermined parameter values; generating based on the identified core set of parameter values, a first secondary media search query; performing the second primary media search query and the first secondary media search query to obtain a second primary set of media items and a first secondary set of media items, respectively; and concurrently displaying, on the display, the second primary set of media items and the first secondary set of media items, wherein the display of the second primary set of media items replaces the display of the first primary set of media items, and wherein the displayed second primary set of media items is ordered before the displayed first secondary set of media items.