diff --git a/packages/core/controls.mjs b/packages/core/controls.mjs
index 49395bff..a9f15617 100644
--- a/packages/core/controls.mjs
+++ b/packages/core/controls.mjs
@@ -573,6 +573,12 @@ const generic_params = [
   // TODO: dedup with synth param, see https://tidalcycles.org/docs/reference/synthesizers/#superpiano
   // ['velocity'],
   ['voice'], // TODO: synth param
+
+  // voicings
+  ['chord'], // https://github.com/tidalcycles/strudel/issues/506
+  ['voiceBelow', 'voicebelow'], // https://github.com/tidalcycles/strudel/issues/506
+  ['voiceMax', 'voicemax'], // https://github.com/tidalcycles/strudel/issues/506
+
   /**
    * Sets the level of reverb.
    *
diff --git a/packages/tonal/test/tonleiter.test.mjs b/packages/tonal/test/tonleiter.test.mjs
index cfca5289..866d1cbc 100644
--- a/packages/tonal/test/tonleiter.test.mjs
+++ b/packages/tonal/test/tonleiter.test.mjs
@@ -55,6 +55,8 @@ describe('tonleiter', () => {
     expect(pc2chroma('D')).toBe(2);
     expect(pc2chroma('Db')).toBe(1);
     expect(pc2chroma('Dbb')).toBe(0);
+    //lowercase
+    // expect(pc2chroma('c')).toBe(0); // TODO
   });
   test('rotateChroma', () => {
     expect(rotateChroma(0, 1)).toBe(1);
@@ -80,6 +82,7 @@ describe('tonleiter', () => {
     expect(note2pc('C5')).toBe('C');
     // expect(note2pc('C52')).toBe('C'); // <- 2 digits fail
     expect(note2pc('Bb3')).toBe('Bb');
+    //expect(note2pc('F')).toBe('F'); // <- fails
   });
   test('note2oct', () => {
     expect(note2oct('C5')).toBe(5);
@@ -103,10 +106,12 @@ describe('tonleiter', () => {
     const voicingDictionary = {
       m7: [
         '3 7 10 14', // b3 5 b7 9
-        '10 14 5 19', // b7 9 b3 5
+        '10 14 15 19', // b7 9 b3 5
       ],
     };
     expect(voiceBelow('Bb4', 'Em7', voicingDictionary)).toEqual(['G3', 'B3', 'D4', 'Gb4']);
     expect(voiceBelow('D5', 'Cm7', voicingDictionary)).toEqual(['Eb4', 'G4', 'Bb4', 'D5']);
+    expect(voiceBelow('G5', 'Cm7', voicingDictionary)).toEqual(['Bb4', 'D5', 'Eb5', 'G5']);
+    // expect(voiceBelow('G4', 'Cm7', voicingDictionary)).toEqual(['Bb3', 'D4', 'Eb4', 'G4']);
   });
 });
diff --git a/packages/tonal/tonleiter.mjs b/packages/tonal/tonleiter.mjs
index 1e9cdeda..6203a699 100644
--- a/packages/tonal/tonleiter.mjs
+++ b/packages/tonal/tonleiter.mjs
@@ -1,3 +1,5 @@
+import { isNote, isNoteWithOctave } from '@strudel.cycles/core';
+
 // https://codesandbox.io/s/stateless-voicings-g2tmz0?file=/src/lib.js:0-2515
 
 const flats = ['C', 'Db', 'D', 'Eb', 'E', 'F', 'Gb', 'G', 'Ab', 'A', 'Bb', 'B'];
@@ -30,6 +32,27 @@ export const note2midi = (note) => {
   const [pc, oct] = [note2pc(note), note2oct(note)];
   return pc2chroma(pc) + oct * 12 + 12;
 };
+export const note2chroma = (note) => {
+  return pc2chroma(note2pc(note));
+};
+
+// TODO: test
+export const midi2chroma = (midi) => midi % 12;
+
+// TODO: test and use in voicing function
+export const x2chroma = (x) => {
+  if (isNoteWithOctave(x)) {
+    return note2chroma(x);
+  }
+  if (isNote(x)) {
+    //pc
+    return pc2chroma(x);
+  }
+  if (typeof x === 'number') {
+    // expect midi
+    return midi2chroma(x);
+  }
+};
 
 // duplicate: util.mjs (does not support sharp flag)
 export const midi2note = (midi, sharp = false) => {
diff --git a/packages/tonal/voicings.mjs b/packages/tonal/voicings.mjs
index 07d1229a..8f877394 100644
--- a/packages/tonal/voicings.mjs
+++ b/packages/tonal/voicings.mjs
@@ -5,6 +5,7 @@ This program is free software: you can redistribute it and/or modify it under th
 */
 
 import { stack, register } from '@strudel.cycles/core';
+import { voiceBelow, note2midi } from './tonleiter.mjs';
 import _voicings from 'chord-voicings';
 const { dictionaryVoicing, minTopNoteDiff } = _voicings.default || _voicings; // parcel module resolution fuckup
 
@@ -129,7 +130,28 @@ export const voicings = register('voicings', function (dictionary, pat) {
  */
 export const rootNotes = register('rootNotes', function (octave, pat) {
   return pat.fmap((value) => {
+    value = value.chord || value;
     const root = value.match(/^([a-gA-G][b#]?).*$/)[1];
     return root + octave;
   });
 });
+
+export const voicing = register('voicing', function (dictionary, pat) {
+  return pat
+    .fmap((value) => {
+      let { voiceMax: max, voiceBelow: below, chord, ...rest } = value;
+      let top = max || below;
+      top = top?.note || top || 'c5';
+      if (typeof dictionary === 'string') {
+        dictionary = voicingRegistry[dictionary]?.dictionary;
+      }
+      let notes = voiceBelow(top, chord, dictionary);
+      if (below) {
+        notes = notes.filter((n) => note2midi(n) !== note2midi(top));
+      }
+      return stack(...notes)
+        .note()
+        .set(rest);
+    })
+    .outerJoin();
+});