diff --git a/package.json b/package.json
index fb1762f..1e6388a 100644
--- a/package.json
+++ b/package.json
@@ -28,6 +28,7 @@
     "react-dropzone": "^14.2.3",
     "react-redux": "^9.1.0",
     "react-scripts": "5.0.1",
+    "sortable": "^2.0.0",
     "typescript": "^4.9.5",
     "uuid": "^9.0.1",
     "vite": "^5.1.4",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 32c9c2c..e88747c 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -83,6 +83,9 @@ dependencies:
   react-scripts:
     specifier: 5.0.1
     version: 5.0.1(@babel/plugin-syntax-flow@7.23.3)(@babel/plugin-transform-react-jsx@7.23.4)(eslint@8.56.0)(react@18.2.0)(typescript@4.9.5)
+  sortable:
+    specifier: ^2.0.0
+    version: 2.0.0
   typescript:
     specifier: ^4.9.5
     version: 4.9.5
@@ -4930,6 +4933,10 @@ packages:
       resolve: 1.1.7
     dev: true
 
+  /browser-split@0.0.0:
+    resolution: {integrity: sha512-CNXO3AXAS1H/kOGQkPjucm1161/XoF3aVkMfujqwk85XN/D/MkQMvoB81lXyX/2rerZS+hPAYYRR3mAW05awjQ==}
+    dev: false
+
   /browserslist@4.23.0:
     resolution: {integrity: sha512-QW8HiM1shhT2GuzkvklfjcKDiWFXHOeFCIA/huJPwHsslwcydgk7X+z2zXpEijP98UCY7HbubZt5J2Zgvf0CaQ==}
     engines: {node: ^6 || ^7 || ^8 || ^9 || ^10 || ^11 || ^12 || >=13.7}
@@ -5107,6 +5114,12 @@ packages:
     resolution: {integrity: sha512-0TNiGstbQmCFwt4akjjBg5pLRTSyj/PkWQ1ZoO2zntmg9yLqSRxwEa4iCfQLGjqhiqBfOJa7W/E8wfGrTDmlZQ==}
     dev: false
 
+  /class-list@0.1.1:
+    resolution: {integrity: sha512-zqR0uW+VsLtyQhixBhkdQ+z6B8+Y8HTh28kdSVjJ4zTTKM7Xz2asAQSya9VI6m/34F6N6Ktm0mrchKB+E5a8Xw==}
+    dependencies:
+      indexof: 0.0.1
+    dev: false
+
   /class-utils@0.3.6:
     resolution: {integrity: sha512-qOhPa/Fj7s6TY8H8esGu5QNpMMQxz79h+urzrNYN6mn+9BnxlDGf5QZ+XeCDsxSjPqsSR56XOZOJmpeurnLMeg==}
     engines: {node: '>=0.10.0'}
@@ -7511,6 +7524,13 @@ packages:
     engines: {node: '>=10.17.0'}
     dev: false
 
+  /hyperscript@1.0.7:
+    resolution: {integrity: sha512-dyfX683lwCsXiVUnmfnO6xji30exAUtr2yWWfCDz6FXjD+qNXwGsBKgSfFTEKNg+MArVI25ZdadfqBgsA32NMw==}
+    dependencies:
+      browser-split: 0.0.0
+      class-list: 0.1.1
+    dev: false
+
   /hyphenate-style-name@1.0.4:
     resolution: {integrity: sha512-ygGZLjmXfPHj+ZWh6LwbC37l43MhfztxetbFCoYTM2VjkIUpeHgSNn7QIyVFj7YQ1Wl9Cbw5sholVJPzWvC2MQ==}
     dev: false
@@ -7586,6 +7606,10 @@ packages:
     engines: {node: '>=8'}
     dev: true
 
+  /indexof@0.0.1:
+    resolution: {integrity: sha512-i0G7hLJ1z0DE8dsqJa2rycj9dBmNKgXBvotXtZYXakU9oivfB9Uj2ZBC27qqef2U58/ZLwalxa1X/RDCdkHtVg==}
+    dev: false
+
   /inflight@1.0.6:
     resolution: {integrity: sha512-k92I/b08q4wvFscXCLvqfsHCrjrF7yiXsQuIVvVE7N82W3+aqpzuUdBbfhWcy/FZR3/4IgflMgKLOsvPDrGCJA==}
     dependencies:
@@ -9006,6 +9030,10 @@ packages:
     hasBin: true
     dev: false
 
+  /jquery-browserify@1.8.1:
+    resolution: {integrity: sha512-IDMCKuU5padhYWP21juFL10BOySPnlihoX7R1dHKeCcwl/JdeO3trDbimKQdPXtQsWIdYMwkAyxQ3+ksEj1iMQ==}
+    dev: false
+
   /js-tokens@4.0.0:
     resolution: {integrity: sha512-RdJUflcE3cUzKiMqQgsCu06FPu9UdIJO0beYbPhHN4k6apgJtifcoCtT9bcxOpYBtpD2kCM6Sbzg4CausW/PKQ==}
 
@@ -9861,6 +9889,10 @@ packages:
       es-abstract: 1.22.4
     dev: false
 
+  /observable@1.3.1:
+    resolution: {integrity: sha512-n1QLn+I5eo/4TJxdrC54mHPYwDPvCZQ9FwwM2VE/jVkXf7aodqb0XImZnLbAIeSbnsWm1BzGcwjxeKktD/rb9g==}
+    dev: false
+
   /obuf@1.1.2:
     resolution: {integrity: sha512-PX1wu0AmAdPqOL1mWhqmlOd8kOIZQwGZw6rh7uby9fTc5lhaOWFLX3I6R1hrF9k3zUY40e6igsLGkDXK92LJNg==}
     dev: false
@@ -12024,6 +12056,14 @@ packages:
       websocket-driver: 0.7.4
     dev: false
 
+  /sortable@2.0.0:
+    resolution: {integrity: sha512-VB3IABlS7TQDd2sRE5zSqW6pPqDsuduyuJZ5vcuGpR9gPQKtFrh1Y3xUAPfxhJ6djF1HYZEfXSO9mFs2eldJ3w==}
+    dependencies:
+      hyperscript: 1.0.7
+      jquery-browserify: 1.8.1
+      observable: 1.3.1
+    dev: false
+
   /source-list-map@2.0.1:
     resolution: {integrity: sha512-qnQ7gVMxGNxsiL4lEuJwe/To8UnK7fAnmbGEEH8RpLouuKbeEm0lhbQVFIrNSuB+G7tVrAlVsZgETT5nljf+Iw==}
     dev: false
diff --git a/src/components/Nugget.tsx b/src/components/Nugget.tsx
index 05c2f64..bb78d17 100644
--- a/src/components/Nugget.tsx
+++ b/src/components/Nugget.tsx
@@ -2,12 +2,13 @@ import { Button, ButtonGroup, Chip, Divider } from '@material-ui/core';
 import React, { Component, DragEvent, useEffect, useState } from 'react';
 import KeyboardArrowUpIcon from '@mui/icons-material/KeyboardArrowUp';
 import KeyboardArrowDownIcon from '@mui/icons-material/KeyboardArrowUp';
-import { $composition, Nugget as NuggetType, decreaseNuggetScore, increaseNuggetScore } from '../lib/prompt';
+import { $composition, Nugget as NuggetType, decreaseNuggetScore, increaseNuggetScore, togglePromptItemMute } from '../lib/prompt';
 import "./Nugget.css";
 import "./PromptItem.css"
 import { $sourceItem, cancelDrop, completeDrop, isPromptItemDropTarget, startDrag, startHoverOver } from '../store/prompt-dnd';
 import { PromptItemProps } from './PromptItem';
 import { useStore } from '@nanostores/react';
+import { VolumeMute, VolumeOff, VolumeUp } from '@mui/icons-material';
 
 export interface NuggetProps extends PromptItemProps {
     nugget: NuggetType,
@@ -28,7 +29,13 @@ export default function Nugget(props: NuggetProps) {
     const composition = useStore($composition)
     const thisId = `prompt-item-${nugget.id}`
 
-    const className = isTopLevel ? 'nugget toplevel prompt-item' : 'nugget child prompt-item';
+    const className = [...(nugget.muted === true ? ["muted"] : []), ...[
+        isTopLevel ? "toplevel" : "child",
+        "nugget",
+        "prompt-item",
+    ]].join(" ");
+
+    console.log("nugget classname: %s", className);
 
     const handleOnDragStart = () => {
         onDragStart ? onDragStart(nugget) : null;
@@ -89,6 +96,13 @@ export default function Nugget(props: NuggetProps) {
                     </Button>
                 </ButtonGroup>
             </span>
+            {isTopLevel &&
+                <span className='hide'>
+                    <Button onClick={() => togglePromptItemMute(nugget.id)}>
+                        {nugget.muted ?  <VolumeUp /> : <VolumeOff /> }
+                    </Button>
+                </span>
+            }
         </div>
     );
 }
\ No newline at end of file
diff --git a/src/components/Operation.tsx b/src/components/Operation.tsx
index 387b636..09ec87b 100644
--- a/src/components/Operation.tsx
+++ b/src/components/Operation.tsx
@@ -1,13 +1,14 @@
-import { Menu, MenuItem } from "@material-ui/core";
+import { Button, Menu, MenuItem } from "@material-ui/core";
 import React, { Children, DragEvent, ReactNode, useEffect } from 'react';
 import "./Operation.css";
 import { Op } from "../lib/operator";
 import { v4 as randomUUID } from "uuid";
-import { $composition, Operation as OperationType, changeOperationOp } from "../lib/prompt";
+import { $composition, Operation as OperationType, changeOperationOp, togglePromptItemMute } from "../lib/prompt";
 import Nugget from "./Nugget";
 import { PromptItemProps } from "./PromptItem";
 import { useStore } from "@nanostores/react";
 import { $sourceItem, cancelDrop, completeDrop, startHoverOver } from "../store/prompt-dnd";
+import { VolumeUp, VolumeOff } from "@mui/icons-material";
 
 interface OperationProps extends PromptItemProps {
   operation: OperationType
@@ -84,6 +85,16 @@ function Operation(props: OperationProps) {
     handleClose();
   }
 
+
+  const className = [...(operation.muted === true ? ["muted"] : []), ...[
+    "operation",
+    operation.op,
+    "prompt-item",
+  ]].join(" ");
+
+  console.log("operation classname: %s", className);
+
+
   return (
     <div
       draggable
@@ -92,7 +103,7 @@ function Operation(props: OperationProps) {
       onDragOver={handleOnDragOver}
       onMouseEnter={handleOnMouseEnter}
       onMouseOut={handleOnMouseLeave}
-      className={`operation ${operation.op} prompt-item`}
+      className={className}
       onContextMenu={handleContextMenu}
       data-promptitem-id={operation.id}
     >
@@ -104,6 +115,11 @@ function Operation(props: OperationProps) {
           })
         }
       </div>
+      <span className='hide'>
+        <Button onClick={() => togglePromptItemMute(operation.id)}>
+          {operation.muted ? <VolumeUp /> : <VolumeOff />}
+        </Button>
+      </span>
       <Menu
         open={contextMenu !== null}
         onClose={handleClose}
diff --git a/src/components/PromptComposer.tsx b/src/components/PromptComposer.tsx
index 333f828..e70e7f8 100644
--- a/src/components/PromptComposer.tsx
+++ b/src/components/PromptComposer.tsx
@@ -18,7 +18,7 @@ export interface PromptComposerProps {
 }
 
 export default function PromptComposer(props: PromptComposerProps) {
-  const [open, setOpen] = useState(true);
+  const [open, setOpen] = useState(false);
 
   const handleClickOpen = () => {
     setOpen(true);
@@ -28,20 +28,15 @@ export default function PromptComposer(props: PromptComposerProps) {
     setOpen(false);
   };
 
-  const handleOnInsertItem = (item: LibraryItem) => {
-    insertIntoComposition(item);
-  }
+  const composition = useStore($composition);
 
-  
-  // const composition = useStore($composition);
-  const [composition, setComposition] = useState($composition.get())
-  useEffect(() => {
-    $composition.subscribe((comp) => {
-      console.log("composition changed!");
-      setComposition(comp as Composition);
-    });
-    console.log("subscribe -- composition")
-  })
+  // const [composition, setComposition] = useState(compStore);
+
+  const handleOnInsertItem = (item: LibraryItem) => {
+    console.log("INSERT %x INTO %s", item, composition)
+    insertIntoComposition(item);
+    console.log(composition)
+  }
 
   /**
    * 
diff --git a/src/components/PromptItem.css b/src/components/PromptItem.css
index 80993f6..373afc7 100644
--- a/src/components/PromptItem.css
+++ b/src/components/PromptItem.css
@@ -4,4 +4,8 @@
 
 .prompt-item .drag-target-hover {
     border: 1px solid blue;
+}
+
+.prompt-item.muted, .operation.muted .nugget {
+    color: gray;
 }
\ No newline at end of file
diff --git a/src/components/PromptLibrary.tsx b/src/components/PromptLibrary.tsx
index 458e71d..e170422 100644
--- a/src/components/PromptLibrary.tsx
+++ b/src/components/PromptLibrary.tsx
@@ -47,7 +47,7 @@ export function PromptLibrary(props: SimpleDialogProps) {
                     $e.stopPropagation();
                     const libItem = library.find(l => l.id === params.id) as LibItemType;
                     console.log("Inserting %o into composition", libItem);
-                    libItem ?? onInsertItem(libItem);
+                    if (libItem) onInsertItem(libItem);
                 }
                 return (
                     <Button onClick={handleClick}>
@@ -69,7 +69,14 @@ export function PromptLibrary(props: SimpleDialogProps) {
     }));
 
     return (
-        <Dialog className="prompt-library-dialog" onClose={handleClose} open={open}>
+        <Dialog
+            hideBackdrop
+            disableEnforceFocus
+            style={{ position: "initial", top: "30%", left: "30%", height: "fit-content", width: "fit-content" }}
+            className="prompt-library-dialog"
+            onClose={handleClose}
+            open={open}
+        >
             <DialogTitle>Prompt Library</DialogTitle>
             <div>
                 <DataGrid rows={rows} columns={columns} />
diff --git a/src/lib/operator.ts b/src/lib/operator.ts
index 2997614..72ef2f0 100644
--- a/src/lib/operator.ts
+++ b/src/lib/operator.ts
@@ -1,7 +1,7 @@
 export enum Op {
     JOINED = "joined",
     AND = "and",
-    SWAPPED = "swaped",
+    SWAPPED = "swapped",
     SWAP = "swap",
     BLENDED = "blended",
     BLEND = "blend",
diff --git a/src/lib/prompt.tsx b/src/lib/prompt.tsx
index d283d68..caa27c7 100644
--- a/src/lib/prompt.tsx
+++ b/src/lib/prompt.tsx
@@ -1,6 +1,6 @@
 import { v4 as randomUUID, v4 as uuidv4 } from "uuid";
 import { Op } from "./operator";
-import { atom, computed } from "nanostores";
+import { Atom, ReadableAtom, Store, WritableAtom, atom, computed } from "nanostores";
 
 type Id = string;
 
@@ -16,7 +16,7 @@ export enum Category {
     medium = "medium",
 }
 
-export function categoryHasName(cat : Category) {
+export function categoryHasName(cat: Category) {
     return (cat === Category.style || cat === Category.vibes)
 }
 
@@ -35,12 +35,16 @@ export type LibraryItem = {
 
 export type Library = Array<LibraryItem>;
 
-export type Nugget = IdAble & {
+export type Muteable = {
+    muted?: boolean,
+}
+
+export type Nugget = IdAble & Muteable & {
     item: LibraryItem,
     score: number,
 }
 
-export type Operation = IdAble & {
+export type Operation = IdAble & Muteable & {
     op: Op,
     items: Array<Nugget>
 }
@@ -74,7 +78,7 @@ export const $composition = atom<Composition>([])
 export function insertIntoComposition(item: LibraryItem) {
     $composition.set([
         ...$composition.get(),
-        { id: randomUUID(), item, score: 0 } as Nugget,
+        { item, id: randomUUID(), score: 0, muted: false } as Nugget,
     ]);
 }
 
@@ -84,10 +88,10 @@ export function removeFromComposition(item: PromptItem) {
     ]);
 }
 
-function nuggetDelta(nuggetId : Id, delta : number) {
+function nuggetDelta(nuggetId: Id, delta: number) {
     $composition.set($composition.get().map(item => {
         if ((item.id === nuggetId) && ("score" in item)) {
-            const o = {...item, score: item.score + delta};
+            const o = { ...item, score: item.score + delta };
             return o;
         }
         return item;
@@ -115,24 +119,25 @@ export function changeOperationOp(operationId: Id, op: Op) {
  * utility method to remove & return a prompt item by ID
  * @param id PromptItem ID
  */
-export function popPromptItem (id : Id) {
+export function popPromptItem(id: Id) {
     const found = $composition.get().find(item => item.id === id);
     $composition.set($composition.get().filter(item => item.id !== id));
     return found;
 }
 
 
-export function lassoNuggets (n1id : Id, n2id : Id, op : Op) {
+export function lassoNuggets(n1id: Id, n2id: Id, op: Op) {
     const n1 = popPromptItem(n1id);
     const n2 = popPromptItem(n2id);
     $composition.set([...$composition.get(), {
         id: uuidv4(),
         op,
         items: [n1, n2],
+        muted: false,
     } as Operation])
 }
 
-export function addToOperation(nId : Id, opId : Id) {
+export function addToOperation(nId: Id, opId: Id) {
     const comp = $composition.get();
     const nugget = comp.find(i => i.id === nId);
     $composition.set($composition.get().map(i => {
@@ -179,8 +184,8 @@ export function operationToText(operation: Operation): string {
 export const $textComposition = computed($composition, (composition) => {
     const JOINER = ", ";
     return composition.map(item => {
-        return "op" in item ? operationToText(item) : nuggetToText(item);
-    }).join(JOINER);
+        return item.muted ? null : ("op" in item ? operationToText(item) : nuggetToText(item));
+    }).filter(i => !!i).join(JOINER);
 });
 
 export type SlottedComposition = PromptItem[][];
@@ -211,4 +216,15 @@ export const $slottedComposition = computed($composition, (composition) => {
         }
     })
     return slotted;
-});
\ No newline at end of file
+});
+
+export function togglePromptItemMute(id: Id) {
+    $composition.set($composition.get().map(
+        c => {
+            return c.id === id ? {
+                ...c,
+                muted: !c.muted,
+            } : c;
+        }
+    ));
+}
\ No newline at end of file
diff --git a/src/store/prompt-dnd.tsx b/src/store/prompt-dnd.tsx
index fbeac80..91a5fad 100644
--- a/src/store/prompt-dnd.tsx
+++ b/src/store/prompt-dnd.tsx
@@ -2,6 +2,8 @@ import { Atom, atom, computed } from "nanostores"
 import { $composition, Nugget, Operation, PromptItem, addToOperation, itemIsNugget, itemIsOperation, lassoNuggets } from "../lib/prompt";
 import { Op } from "../lib/operator";
 
+export type DropCandidate = string | string []
+
 export type DragDropState = {
     currentSourceId?: string | null,
     currentDropCandidateId?: string | null,