How Do I Filter Music Tracks By MediaKind Using JavaScript?

Question

Using JavaScript I&#8217;m trying to filter music tracks by mediaKind.  Using AppleScript:  &#8220;set musicVideos to every track whose media kind is music video&#8221; in a tell statement returns a list of the music videos.  Using what I believe is equivalent JavaScript code: &#8220;var musicVideos = Application (&#8220;Music&#8221;).tracks.whose({&#8220;mediaKind&#8221;: {_equals: &#8220;music video&#8221;}});&#8221; returns an empty array.  Using the choice of &#8220;song&#8221; as media kind (JavaScript mediaKind) also produces a populated list using AppleScript and an empty array using JavaScript.  I don&#8217;t seem to have any difficulty filtering music tracks by other track properties using JavaScript. Using JavaScript I&#8217;m trying to filter music tracks by mediaKind.  Using AppleScript:  &#8220;set musicVideos to every track whose media kind is music video&#8221; in a tell statement returns a list of the music videos.  Using what I believe is equivalent JavaScript code: &#8220;var musicVideos = Application (&#8220;Music&#8221;).tracks.whose({&#8220;mediaKind&#8221;: {_equals: &#8220;music video&#8221;}});&#8221; returns an empty array.  Using the choice of &#8220;song&#8221; as media kind (JavaScript mediaKind) also produces a populated list using AppleScript and an empty array using JavaScript.  I don&#8217;t seem to have any difficulty filtering music tracks by other track properties using JavaScript. Device: Mac Running Catalina App: Music &#8212;&#8211; Dana Stevens

Accepted Answer

Perfect.  Thanks Gary!