diff --git a/package.json b/package.json
index 5c8230d..d5dd6aa 100644
--- a/package.json
+++ b/package.json
@@ -39,7 +39,7 @@
     "tone": "^14.8.49",
     "unique-names-generator": "^4.7.1",
     "vite-plugin-markdown": "^2.1.0",
-    "zifferjs": "^0.0.21",
+    "zifferjs": "^0.0.24",
     "zzfx": "^1.2.0"
   }
 }
diff --git a/src/classes/ZPlayer.ts b/src/classes/ZPlayer.ts
index 75313f9..ae0fe54 100644
--- a/src/classes/ZPlayer.ts
+++ b/src/classes/ZPlayer.ts
@@ -196,6 +196,20 @@ export class Player extends Event {
     return this;
   }
 
+  voiceleading() {
+    if (this.atTheBeginning()) this.ziffers.lead();
+    return this;
+  }
+
+  lead = () => this.voiceleading();
+
+  invert = (n: number) => {
+    if (this.atTheBeginning()) {
+      this.ziffers.invert(n);
+    }
+    return this;
+  }
+
   retrograde() {
     if (this.atTheBeginning()) this.ziffers.retrograde();
     return this;
diff --git a/src/documentation/ziffers.ts b/src/documentation/ziffers.ts
index e01c828..dc3d9df 100644
--- a/src/documentation/ziffers.ts
+++ b/src/documentation/ziffers.ts
@@ -28,6 +28,7 @@ The basic Ziffer notation is entirely written in JavaScript strings (_e.g_ <ic>"
 | **Accidentals** | <ic># b</ic> | Sharp and flats, just like with regular music notation :smile: |
 | **Rest**      |  <ic>r</ic> | Rest / silences |
 | **Repeat**    | <ic>:1-9</ic> | Repeat the item 1-9 times  |
+| **Chords**    | <ic>[1-9]+ / [iv]+ / [AG]+name</ic> | Multiple pitches grouped together, roman numerals or named chords |
 
 **Note:** Some features are still unsupported. For full syntax see article about <a href="https://zenodo.org/record/7841945" target="_blank">Ziffers</a>.
 
@@ -136,6 +137,21 @@ ${makeExample(
 `
 )}
 
+${makeExample(
+  "Chord transposition with roman numerals",
+  `
+  z1('i i v%-4 v%-2 vi%-5 vi%-3 iv%-2 iv%-1').sound('sawtooth').out()
+`
+)}
+
+${makeExample(
+  "Chord transposition with named chords",
+  `
+  z1('e C9:4 Emin:4 F7%-1:4 Emaj%-1:4')
+  .sound("stab").out()
+`
+)}
+
 ## Algorithmic operations
 
 Ziffers provides shorthands for **many** numeric and algorithimic operations such as evaluating random numbers and creating sequences using list operations:
diff --git a/yarn.lock b/yarn.lock
index ec0ad2f..e41f7bd 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1451,10 +1451,10 @@ yaml@^2.1.1:
   resolved "https://registry.yarnpkg.com/yaml/-/yaml-2.3.1.tgz#02fe0975d23cd441242aa7204e09fc28ac2ac33b"
   integrity sha512-2eHWfjaoXgTBC2jNM1LRef62VQa0umtvRiDSk6HSzW7RvS5YtkabJrwYLLEKWBc8a5U2PTSCs+dJjUTJdlHsWQ==
 
-zifferjs@^0.0.21:
-  version "0.0.21"
-  resolved "https://registry.yarnpkg.com/zifferjs/-/zifferjs-0.0.21.tgz#5df0c6541ae189b2515b4eb4856eb9d2c0610778"
-  integrity sha512-wJat1nbeCJ1j7+5YpeB5MnZdbyFfAwVRB8Ei+cgViEtjidwe4oCLtNq1p8Gq1PjjpSzr32YR57egCdME2Lb5qg==
+zifferjs@^0.0.24:
+  version "0.0.24"
+  resolved "https://registry.yarnpkg.com/zifferjs/-/zifferjs-0.0.24.tgz#073f606086ed7977a8c5cd6cc2f9d6c897415281"
+  integrity sha512-pTUM2i3pTBsINiflBym48pzQnEmw93Xf9GVq0FUnnWwLBirwJJsOxJeZZG/c7DVf4EnV7oC1Ik/R5ULt2sVtug==
 
 zzfx@^1.2.0:
   version "1.2.0"