diff --git a/packages/core/pattern.mjs b/packages/core/pattern.mjs
index 161d3da8f..8a6b68726 100644
--- a/packages/core/pattern.mjs
+++ b/packages/core/pattern.mjs
@@ -2110,7 +2110,7 @@ export const { iterBack, iterback } = register(['iterBack', 'iterback'], functio
  */
 const _repeatCycles = function (n, pat) {
   return slowcat(...Array(n).fill(pat));
-}
+};
 
 const { repeatCycles } = register('repeatCycles', _repeatCycles);
 
@@ -2135,15 +2135,10 @@ const _chunk = function (n, func, pat, back = false, fast = false) {
   return pat.when(binary_pat, func);
 };
 
-const {chunk, slowchunk, slowChunk} = register(['chunk', 'slowchunk', 'slowChunk'], function (n, func, pat) {
+const { chunk, slowchunk, slowChunk } = register(['chunk', 'slowchunk', 'slowChunk'], function (n, func, pat) {
   return _chunk(n, func, pat, false, false);
 });
 
-const {fastchunk, fastChunk} = register(['fastchunk', 'fastChunk'], function (n, func, pat) {
-  return _chunk(n, func, pat, false, true);
-});
-
-
 /**
  * Like `chunk`, but cycles through the parts in reverse order. Known as chunk' in tidalcycles
  * @name chunkBack
@@ -2157,6 +2152,21 @@ export const { chunkBack, chunkback } = register(['chunkBack', 'chunkback'], fun
   return _chunk(n, func, pat, true);
 });
 
+/**
+ * Like `chunk`, but the cycles of the source pattern aren't repeated
+ * for each set of chunks.
+ * @name fastChunk
+ * @synonyms fastchunk
+ * @memberof Pattern
+ * @returns Pattern
+ * @example
+ * "<0 8> 1 2 3 4 5 6 7".fastChunk(4, x => x.color('red')).slow(4).scale("C2:major").note()
+  .s("folkharp")
+ */
+const { fastchunk, fastChunk } = register(['fastchunk', 'fastChunk'], function (n, func, pat) {
+  return _chunk(n, func, pat, false, true);
+});
+
 // TODO - redefine elsewhere in terms of mask
 export const bypass = register('bypass', function (on, pat) {
   on = Boolean(parseInt(on));
diff --git a/packages/core/test/pattern.test.mjs b/packages/core/test/pattern.test.mjs
index ad3ed1f0b..f4a031101 100644
--- a/packages/core/test/pattern.test.mjs
+++ b/packages/core/test/pattern.test.mjs
@@ -1005,18 +1005,21 @@ describe('Pattern', () => {
   });
   describe('chunk', () => {
     it('Processes each cycle of the source pattern multiple times, once for each chunk', () => {
-      expect(sequence(0, 1, 2, 3).slow(2).chunk(2, add(10)).fast(4).firstCycleValues).toStrictEqual([ 10, 1, 0, 11, 12, 3, 2, 13 ])
+      expect(sequence(0, 1, 2, 3).slow(2).chunk(2, add(10)).fast(4).firstCycleValues).toStrictEqual([
+        10, 1, 0, 11, 12, 3, 2, 13,
+      ]);
     });
   });
   describe('fastChunk', () => {
     it('Unlike chunk, cycles of the source pattern proceed cycle-by-cycle', () => {
-      expect(sequence(0, 1, 2, 3).slow(2).fastChunk(2, add(10)).fast(4).firstCycleValues).toStrictEqual([ 10,1,2,13,10,1,2,13 ])
+      expect(sequence(0, 1, 2, 3).slow(2).fastChunk(2, add(10)).fast(4).firstCycleValues).toStrictEqual([
+        10, 1, 2, 13, 10, 1, 2, 13,
+      ]);
     });
   });
   describe('repeatCycles', () => {
     it('Repeats each cycle of the source pattern the given number of times', () => {
-      expect(slowcat(0, 1).repeatCycles(2).fast(6).firstCycleValues).toStrictEqual([ 0,0,1,1,0,0 ])
+      expect(slowcat(0, 1).repeatCycles(2).fast(6).firstCycleValues).toStrictEqual([0, 0, 1, 1, 0, 0]);
     });
   });
-  
 });
diff --git a/test/__snapshots__/examples.test.mjs.snap b/test/__snapshots__/examples.test.mjs.snap
index 20fe3f0b4..18a7e2a9b 100644
--- a/test/__snapshots__/examples.test.mjs.snap
+++ b/test/__snapshots__/examples.test.mjs.snap
@@ -1794,6 +1794,19 @@ exports[`runs examples > example "fast" example index 0 1`] = `
 ]
 `;
 
+exports[`runs examples > example "fastChunk" example index 0 1`] = `
+[
+  "[ 0/1 → 1/2 | note:C2 s:folkharp ]",
+  "[ 1/2 → 1/1 | note:D2 s:folkharp ]",
+  "[ 1/1 → 3/2 | note:E2 s:folkharp ]",
+  "[ 3/2 → 2/1 | note:F2 s:folkharp ]",
+  "[ 2/1 → 5/2 | note:G2 s:folkharp ]",
+  "[ 5/2 → 3/1 | note:A2 s:folkharp ]",
+  "[ 3/1 → 7/2 | note:B2 s:folkharp ]",
+  "[ 7/2 → 4/1 | note:C3 s:folkharp ]",
+]
+`;
+
 exports[`runs examples > example "fastGap" example index 0 1`] = `
 [
   "[ 0/1 → 1/4 | s:bd ]",