diff --git a/readme.md b/readme.md
index c9adb58..3dfdfde 100644
--- a/readme.md
+++ b/readme.md
@@ -8,6 +8,10 @@ If you do wish to use this data for your own purposes, i.e: to make a custom pla
 
 ```yaml
 required: [ version, songs ]
+$defs:
+  GWRadioURI:
+    type: uri
+    description: 'A URI that points to the source file. See `GWMediaPlayer.fromURIToAbsolute()` for how to convert to a URL'
 properties:
   version: { type: integer }
   songs:
@@ -17,9 +21,33 @@ properties:
         id:
           type: string
         tags:
-          description: 'A list of tags used for filtering. Entries are arbitrary, see latest songs list.'
+          description: 'A list of tags used for filtering.'
           type: array
-          items: [ { type: string } ]
+          items:
+          - const: sus
+            description: >-
+              Media information will render in the Among Us Font.
+              In imposter mode, only songs tagged with sus will be in shuffle
+          - const: niggers
+            description: >-
+              Media that was originally available through the now-defunct nigge.rs online radio.
+              Tagged items may contain the original _nigid and/or _nigkey as metadata
+            $seeAlso:
+            - '#/properties/songs/items/properties/metadata/properties/_nigid'
+            - '#/properties/songs/items/properties/metadata/properties/_nigkey'
+          - const: splash-song
+            description: >-
+              Media that can play on the Glowers Club splash page.
+          - const: misc
+            description: 'Media that does not significantly contain music.'
+          - const: moonman
+            description: 'Moonman songs'
+          - regex: '^radio\-media\-style\-[a-z\-]+'
+            description: 'Custom style information. i.e: to remove the album art box or disable background blur'
+          - type: string
+            description: >-
+              Tags may also be arbitrary
+
         metadata:
           required: [ title, artist ]
           properties:
@@ -30,10 +58,12 @@ properties:
               type: string
               format: url
             _nigid:
-              description: 'The original song id from nigge.rs. Do not use for nigge.rs detection, use the "niggers" tag instead'
+              $seeAlso: '#/properties/songs/items/properties/tags/items/1'
+              description: 'The original song id from nigge.rs.'
               type: string
             _nigkey:
-              description: 'Content of _id from the original nigge.rs song entry. Do not use for nigge.rs detection, use the "niggers" tag instead'
+              $seeAlso: '#/properties/songs/items/properties/tags/items/1'
+              description: 'Content of _id from the original nigge.rs song entry.'
               type: string
         sources:
           type: array
@@ -41,9 +71,7 @@ properties:
           - required: [ type, url ]
             properties:
               type: { type: string, format: mimetype }
-              uri:
-                description: 'A URI that points to the source file. See `GWMediaPlayer.fromURIToAbsolute()` for how to convert to a URL'
-                type: string
+              uri: { "$ref": "#/$defs/GWRadioURI" }
               previews:
                 description: >-
                   This is an array so GWMediaPlayer can better display videos being played as audio only.
@@ -54,7 +82,8 @@ properties:
                     display_type:
                       description: 'Used to determine how the media should be displayed. See GWMediaPlayer.EDisplayType'
                       type: string
-                    uri: { "$ref": "#/properties/songs/items/properties/sources/items/properties/uri" }
+                    uri: { "$ref": "#/$defs/GWRadioURI" }
                     type: { type: string, format: mimetype }
                     size: { type: string }
 ```
+