diff --git a/client/src/components/MainWindow.tsx b/client/src/components/MainWindow.tsx
index b028dfb..2839106 100644
--- a/client/src/components/MainWindow.tsx
+++ b/client/src/components/MainWindow.tsx
@@ -1,10 +1,9 @@
-import React, { useReducer, Reducer } from 'react';
+import React, { useReducer, Reducer, useContext } from 'react';
 import { ThemeProvider, CssBaseline, createMuiTheme } from '@material-ui/core';
 import { grey } from '@material-ui/core/colors';
-import AppBar from './appbar/AppBar';
+import AppBar, { AppBarTab } from './appbar/AppBar';
 import QueryWindow, { QueryWindowReducer } from './windows/query/QueryWindow';
-import { NewTabProps } from './appbar/AddTabMenu';
-import { newWindowState, newWindowReducer, WindowType, Window } from './windows/Windows';
+import { newWindowState, newWindowReducer, WindowType } from './windows/Windows';
 import ArtistWindow from './windows/artist/ArtistWindow';
 import AlbumWindow from './windows/album/AlbumWindow';
 import TagWindow from './windows/tag/TagWindow';
@@ -22,54 +21,37 @@ const darkTheme = createMuiTheme({
     },
 });
 
-function WindowContent(props: {
-    type: WindowType,
-}) {
-    const { id } = useParams();
-    return <Window type={props.type} stateOverride={id ? { "id": id } : {}} />
-}
-
 export default function MainWindow(props: any) {
-    const [windowState, windowDispatch] = useReducer(
-        QueryWindowReducer,
-        {
-            editingQuery: false,
-            query: null,
-            resultsForQuery: null,
-        },
-    );
-
     return <ThemeProvider theme={darkTheme}>
         <CssBaseline />
         <BrowserRouter>
-            <AppBar
-                tabLabels={[]}
-                selectedTab={0}
-                setSelectedTab={(t: number) => { }}
-                onCloseTab={(t: number) => { }}
-                onAddTab={(w: NewTabProps) => { }}
-            />
             <Switch>
                 <Route exact path="/">
                     <Redirect to={"/query"} />
                 </Route>
                 <Route path="/query">
-                    <WindowContent type={WindowType.Query} />
+                    <AppBar selectedTab={AppBarTab.Query} />
+                    <QueryWindow/>
                 </Route>
                 <Route path="/artist/:id">
-                    <WindowContent type={WindowType.Artist} />
+                    <AppBar selectedTab={null} />
+                    <ArtistWindow/>
                 </Route>
                 <Route path="/tag/:id">
-                    <WindowContent type={WindowType.Tag} />
+                    <AppBar selectedTab={null} />
+                    <TagWindow/>
                 </Route>
                 <Route path="/album/:id">
-                    <WindowContent type={WindowType.Album} />
+                    <AppBar selectedTab={null} />
+                    <AlbumWindow/>
                 </Route>
                 <Route path="/song/:id">
-                    <WindowContent type={WindowType.Song} />
+                    <AppBar selectedTab={null} />
+                    <SongWindow/>
                 </Route>
                 <Route path="/tags">
-                    <WindowContent type={WindowType.ManageTags} />
+                    <AppBar selectedTab={AppBarTab.Tags} />
+                    <ManageTagsWindow/>
                 </Route>
             </Switch>
         </BrowserRouter>
diff --git a/client/src/components/appbar/AddTabMenu.tsx b/client/src/components/appbar/AddTabMenu.tsx
deleted file mode 100644
index a9e0755..0000000
--- a/client/src/components/appbar/AddTabMenu.tsx
+++ /dev/null
@@ -1,40 +0,0 @@
-import React from 'react';
-import { WindowType } from '../windows/Windows';
-import { Menu, MenuItem } from '@material-ui/core';
-
-export interface NewTabProps {
-    windowType: WindowType,
-}
-
-export interface IProps {
-    anchorEl: null | HTMLElement,
-    onClose: () => void,
-    onCreateTab: (q: NewTabProps) => void,
-}
-
-export default function AddTabMenu(props: IProps) {
-    return <Menu
-        anchorEl={props.anchorEl}
-        keepMounted
-        open={Boolean(props.anchorEl)}
-        onClose={props.onClose}
-    >
-        <MenuItem disabled={true}>New Tab</MenuItem>
-        <MenuItem
-            onClick={() => {
-                props.onClose();
-                props.onCreateTab({
-                    windowType: WindowType.Query,
-                })
-            }}
-        >{WindowType.Query}</MenuItem>
-        <MenuItem
-            onClick={() => {
-                props.onClose();
-                props.onCreateTab({
-                    windowType: WindowType.ManageTags,
-                })
-            }}
-        >Manage Tags</MenuItem>
-    </Menu>
-}
\ No newline at end of file
diff --git a/client/src/components/appbar/AppBar.tsx b/client/src/components/appbar/AppBar.tsx
index bf0f252..28809f2 100644
--- a/client/src/components/appbar/AppBar.tsx
+++ b/client/src/components/appbar/AppBar.tsx
@@ -1,60 +1,31 @@
 import React from 'react';
-import { AppBar as MuiAppBar, Box, Tab as MuiTab, Tabs, IconButton } from '@material-ui/core';
+import { AppBar as MuiAppBar, Box, Tab as MuiTab, Tabs, IconButton, Typography } from '@material-ui/core';
 import CloseIcon from '@material-ui/icons/Close';
-import AddIcon from '@material-ui/icons/Add';
-import AddTabMenu, { NewTabProps } from './AddTabMenu';
-import { Link } from 'react-router-dom';
-
-export interface IProps {
-    tabLabels: string[],
-    selectedTab: number,
-    setSelectedTab: (n: number) => void,
-    onCloseTab: (idx: number) => void,
-    onAddTab: (w: NewTabProps) => void,
-}
-
-export interface TabProps {
-    onClose: () => void,
+import SearchIcon from '@material-ui/icons/Search';
+import LocalOfferIcon from '@material-ui/icons/LocalOffer';
+import { Link, useHistory } from 'react-router-dom';
+import { WindowType } from '../windows/Windows';
+
+export enum AppBarTab {
+    Query = 0,
+    Tags,
 }
 
-export function Tab(props: any) {
-    const { onClose, label, ...restProps } = props;
-
-    const labelElem = <Box
-        display="flex"
-        alignItems="center"
-        justifyContent="center"
-    >
-        {label}
-        <Box ml={1}>
-            <IconButton
-                size="small"
-                color="inherit"
-                onClick={onClose}
-            >
-                <CloseIcon />
-            </IconButton>
-        </Box>
-    </Box>;
-
-    return <MuiTab
-        label={labelElem}
-        {...restProps}
-    />
+export const appBarTabProps: Record<any, any> = {
+    [AppBarTab.Query]: {
+        label: <Box display="flex"><SearchIcon/><Typography variant="button">Query</Typography></Box>,
+        path: "/query",
+    },
+    [AppBarTab.Tags]: {
+        label: <Box display="flex"><LocalOfferIcon/><Typography variant="button">Tags</Typography></Box>,
+        path: "/tags",
+    },
 }
 
-export default function AppBar(props: IProps) {
-    const [addMenuAnchorEl, setAddMenuAnchorEl] = React.useState<null | HTMLElement>(null);
-
-    const onOpenAddMenu = (event: any) => {
-        setAddMenuAnchorEl(event.currentTarget);
-    };
-    const onCloseAddMenu = () => {
-        setAddMenuAnchorEl(null);
-    };
-    const onAddTab = (w: NewTabProps) => {
-        props.onAddTab(w);
-    };
+export default function AppBar(props: {
+    selectedTab: AppBarTab | null
+}) {
+    const history = useHistory();
 
     return <>
         <MuiAppBar position="static" style={{ background: 'grey' }}>
@@ -66,23 +37,16 @@ export default function AppBar(props: IProps) {
                 </Link>
                 <Tabs
                     value={props.selectedTab}
-                    onChange={(e: any, v: number) => props.setSelectedTab(v)}
+                    onChange={(e: any, val: AppBarTab) => history.push(appBarTabProps[val].path)}
                     variant="scrollable"
                     scrollButtons="auto"
                 >
-                    {props.tabLabels.map((l: string, idx: number) => <Tab
-                        label={l}
+                    {Object.keys(appBarTabProps).map((tab: any, idx: number) => <MuiTab
+                        label={appBarTabProps[tab].label}
                         value={idx}
-                        onClose={() => props.onCloseTab(idx)}
                     />)}
                 </Tabs>
-                <IconButton color="inherit" onClick={onOpenAddMenu}><AddIcon /></IconButton>
             </Box>
         </MuiAppBar>
-        <AddTabMenu
-            anchorEl={addMenuAnchorEl}
-            onClose={onCloseAddMenu}
-            onCreateTab={onAddTab}
-        />
     </>
 }
\ No newline at end of file
diff --git a/client/src/components/tables/ResultsTable.tsx b/client/src/components/tables/ResultsTable.tsx
index 5952b95..5fee3d1 100644
--- a/client/src/components/tables/ResultsTable.tsx
+++ b/client/src/components/tables/ResultsTable.tsx
@@ -1,13 +1,7 @@
 import React from 'react';
 import { TableContainer, Table, TableHead, TableRow, TableCell, Paper, makeStyles, TableBody, Chip, Box, Button } from '@material-ui/core';
 import stringifyList from '../../lib/stringifyList';
-import { newWindowReducer, WindowType } from '../windows/Windows';
-import PersonIcon from '@material-ui/icons/Person';
-import AlbumIcon from '@material-ui/icons/Album';
-import AudiotrackIcon from '@material-ui/icons/Audiotrack';
-import LocalOfferIcon from '@material-ui/icons/LocalOffer';
-import { songGetters } from '../../lib/songGetters';
-import { Redirect, useHistory } from 'react-router';
+import { useHistory } from 'react-router';
 
 export interface SongGetters {
     getTitle: (song: any) => string,
@@ -20,12 +14,10 @@ export interface SongGetters {
     getTagIds: (song: any) => number[][], // Each tag is represented as a series of ids.
 }
 
-export interface IProps {
+export default function SongTable(props: {
     songs: any[],
     songGetters: SongGetters,
-}
-
-export default function SongTable(props: IProps) {
+}) {
     const history = useHistory();
 
     const classes = makeStyles({
diff --git a/client/src/components/windows/Windows.tsx b/client/src/components/windows/Windows.tsx
index f58966c..edd6768 100644
--- a/client/src/components/windows/Windows.tsx
+++ b/client/src/components/windows/Windows.tsx
@@ -24,41 +24,6 @@ export enum WindowType {
 
 export interface WindowState { }
 
-export function Window(props: {
-    type: WindowType,
-    stateOverride: any,
-}) {
-    const [state, dispatch] = useReducer(
-        newWindowReducer[props.type],
-        newWindowState[props.type](),
-    );
-    const _state: any = {
-        ...state,
-        ...props.stateOverride
-    };
-        
-    if (props.type === WindowType.Query) {
-        return <QueryWindow state={_state} dispatch={dispatch}/>
-    }
-    if (props.type === WindowType.Artist) {
-        return <ArtistWindow state={_state} dispatch={dispatch}/>
-    }
-    if (props.type === WindowType.Album) {
-        return <AlbumWindow state={_state} dispatch={dispatch}/>
-    }
-    if (props.type === WindowType.ManageTags) {
-        return <ManageTagsWindow state={_state} dispatch={dispatch}/>
-    }
-    if (props.type === WindowType.Song) {
-        return <SongWindow state={_state} dispatch={dispatch}/>
-    }
-    if (props.type === WindowType.Tag) {
-        return <TagWindow state={_state} dispatch={dispatch}/>
-    }
-
-    throw new Error("Unsupported window type")
-}
-
 export const newWindowReducer = {
     [WindowType.Query]: QueryWindowReducer,
     [WindowType.Artist]: ArtistWindowReducer,
diff --git a/client/src/components/windows/album/AlbumWindow.tsx b/client/src/components/windows/album/AlbumWindow.tsx
index 0d10dee..07daa38 100644
--- a/client/src/components/windows/album/AlbumWindow.tsx
+++ b/client/src/components/windows/album/AlbumWindow.tsx
@@ -1,4 +1,4 @@
-import React, { useEffect, useState } from 'react';
+import React, { useEffect, useState, useReducer } from 'react';
 import { Box, Typography, IconButton, CircularProgress } from '@material-ui/core';
 import AlbumIcon from '@material-ui/icons/Album';
 import * as serverApi from '../../../api';
@@ -10,6 +10,8 @@ import SongTable, { SongGetters } from '../../tables/ResultsTable';
 import { saveAlbumChanges } from '../../../lib/saveChanges';
 import { QueryLeafBy, QueryLeafOp } from '../../../lib/query/Query';
 import { queryAlbums, querySongs } from '../../../lib/backend/queries';
+import { songGetters } from '../../../lib/songGetters';
+import { useParams } from 'react-router';
 var _ = require('lodash');
 
 export type AlbumMetadata = serverApi.AlbumDetails;
@@ -45,11 +47,6 @@ export function AlbumWindowReducer(state: AlbumWindowState, action: any) {
     }
 }
 
-export interface IProps {
-    state: AlbumWindowState,
-    dispatch: (action: any) => void,
-}
-
 export async function getAlbumMetadata(id: number) {
     return (await queryAlbums({
         query: {
@@ -62,7 +59,23 @@ export async function getAlbumMetadata(id: number) {
     }))[0];
 }
 
-export default function AlbumWindow(props: IProps) {
+export default function AlbumWindow(props: {}) {
+    const { id } = useParams();
+    const [state, dispatch] = useReducer(AlbumWindowReducer, {
+        id: id,
+        metadata: null,
+        pendingChanges: null,
+        songGetters: songGetters,
+        songsOnAlbum: null,
+    });
+
+    return <AlbumWindowControlled state={state} dispatch={dispatch} />
+}
+
+export function AlbumWindowControlled(props: {
+    state: AlbumWindowState,
+    dispatch: (action: any) => void,
+}) {
     let metadata = props.state.metadata;
     let pendingChanges = props.state.pendingChanges;
 
@@ -94,7 +107,7 @@ export default function AlbumWindow(props: IProps) {
             props.dispatch({
                 type: AlbumWindowStateActions.SetSongs,
                 value: songs,
-            }); 
+            });
         })();
     }, [props.state.songsOnAlbum]);
 
diff --git a/client/src/components/windows/artist/ArtistWindow.tsx b/client/src/components/windows/artist/ArtistWindow.tsx
index b426ec3..ce28da5 100644
--- a/client/src/components/windows/artist/ArtistWindow.tsx
+++ b/client/src/components/windows/artist/ArtistWindow.tsx
@@ -1,4 +1,4 @@
-import React, { useEffect, useState } from 'react';
+import React, { useEffect, useState, useReducer } from 'react';
 import { Box, Typography, IconButton, Button, CircularProgress } from '@material-ui/core';
 import PersonIcon from '@material-ui/icons/Person';
 import * as serverApi from '../../../api';
@@ -10,6 +10,8 @@ import SongTable, { SongGetters } from '../../tables/ResultsTable';
 import { saveArtistChanges } from '../../../lib/saveChanges';
 import { QueryLeafBy, QueryLeafOp } from '../../../lib/query/Query';
 import { queryArtists, querySongs } from '../../../lib/backend/queries';
+import { songGetters } from '../../../lib/songGetters';
+import { useParams } from 'react-router';
 var _ = require('lodash');
 
 export type ArtistMetadata = serverApi.ArtistDetails;
@@ -62,7 +64,23 @@ export async function getArtistMetadata(id: number) {
     }))[0];
 }
 
-export default function ArtistWindow(props: IProps) {
+export default function ArtistWindow(props: {}) {
+    const { id } = useParams();
+    const [state, dispatch] = useReducer(ArtistWindowReducer, {
+        id: id,
+        metadata: null,
+        pendingChanges: null,
+        songGetters: songGetters,
+        songsByArtist: null,
+    });
+
+    return <ArtistWindowControlled state={state} dispatch={dispatch} />
+}
+
+export function ArtistWindowControlled(props: {
+    state: ArtistWindowState,
+    dispatch: (action: any) => void,
+}) {
     let metadata = props.state.metadata;
     let pendingChanges = props.state.pendingChanges;
 
@@ -94,7 +112,7 @@ export default function ArtistWindow(props: IProps) {
             props.dispatch({
                 type: ArtistWindowStateActions.SetSongs,
                 value: songs,
-            }); 
+            });
         })();
     }, [props.state.songsByArtist]);
 
diff --git a/client/src/components/windows/manage_tags/ManageTagsWindow.tsx b/client/src/components/windows/manage_tags/ManageTagsWindow.tsx
index 748931b..285dfdd 100644
--- a/client/src/components/windows/manage_tags/ManageTagsWindow.tsx
+++ b/client/src/components/windows/manage_tags/ManageTagsWindow.tsx
@@ -1,4 +1,4 @@
-import React, { useEffect, useState, ReactFragment } from 'react';
+import React, { useEffect, useState, ReactFragment, useReducer } from 'react';
 import { WindowState, newWindowReducer, WindowType } from '../Windows';
 import { Box, Typography, Chip, IconButton, useTheme, Button } from '@material-ui/core';
 import LoyaltyIcon from '@material-ui/icons/Loyalty';
@@ -127,7 +127,7 @@ export function SingleTag(props: {
     const hasChildren = 'children' in tag && tag.children.length > 0;
 
     const [menuPos, setMenuPos] = React.useState<null | number[]>(null);
-    const [expanded, setExpanded] = useState<boolean>(false);
+    const [expanded, setExpanded] = useState<boolean>(true);
     const theme = useTheme();
 
     const history = useHistory();
@@ -340,7 +340,17 @@ function applyTagsChanges(tags: Record<string, any>, changes: TagChange[]) {
     return retval;
 }
 
-export default function ManageTagsWindow(props: {
+export default function ManageTagsWindow(props: {}) {
+    const [state, dispatch] = useReducer(ManageTagsWindowReducer, {
+        fetchedTags: null,
+        alert: null,
+        pendingChanges: [],
+    });
+
+    return <ManageTagsWindowControlled state={state} dispatch={dispatch} />
+}
+
+export function ManageTagsWindowControlled(props: {
     state: ManageTagsWindowState,
     dispatch: (action: any) => void,
 }) {
@@ -368,9 +378,9 @@ export default function ManageTagsWindow(props: {
         })();
     }, [props.state.fetchedTags]);
 
-    const tagsWithChanges = annotateTagsWithChanges(props.state.fetchedTags || {}, props.state.pendingChanges)
+    const tagsWithChanges = annotateTagsWithChanges(props.state.fetchedTags || {}, props.state.pendingChanges || [])
     const changedTags = organiseTags(
-        applyTagsChanges(props.state.fetchedTags || {}, props.state.pendingChanges),
+        applyTagsChanges(props.state.fetchedTags || {}, props.state.pendingChanges || []),
         null);
     const tags = organiseTags(tagsWithChanges, null);
 
diff --git a/client/src/components/windows/query/QueryWindow.tsx b/client/src/components/windows/query/QueryWindow.tsx
index 74f6bd9..9561883 100644
--- a/client/src/components/windows/query/QueryWindow.tsx
+++ b/client/src/components/windows/query/QueryWindow.tsx
@@ -1,4 +1,4 @@
-import React, { useEffect } from 'react';
+import React, { useEffect, useReducer } from 'react';
 import { createMuiTheme, Box, LinearProgress } from '@material-ui/core';
 import { QueryElem, toApiQuery, QueryLeafBy, QueryLeafOp } from '../../../lib/query/Query';
 import QueryBuilder from '../../querybuilder/QueryBuilder';
@@ -47,7 +47,7 @@ async function getArtistNames(filter: string) {
         limit: -1,
     });
 
-    return [...(new Set([...(artists.map((a:any) => a.name))]))];
+    return [...(new Set([...(artists.map((a: any) => a.name))]))];
 }
 
 async function getAlbumNames(filter: string) {
@@ -61,7 +61,7 @@ async function getAlbumNames(filter: string) {
         limit: -1,
     });
 
-    return [...(new Set([...(albums.map((a:any) => a.name))]))];
+    return [...(new Set([...(albums.map((a: any) => a.name))]))];
 }
 
 async function getSongTitles(filter: string) {
@@ -75,7 +75,7 @@ async function getSongTitles(filter: string) {
         limit: -1,
     });
 
-    return [...(new Set([...(songs.map((s:any) => s.title))]))];
+    return [...(new Set([...(songs.map((s: any) => s.title))]))];
 }
 
 async function getTagItems() {
@@ -98,13 +98,20 @@ export function QueryWindowReducer(state: QueryWindowState, action: any) {
             throw new Error("Unimplemented QueryWindow state update.")
     }
 }
+export default function QueryWindow(props: {}) {
+    const [state, dispatch] = useReducer(QueryWindowReducer, {
+        editingQuery: false,
+        query: null,
+        resultsForQuery: null,
+    });
 
-export interface IProps {
-    state: QueryWindowState,
-    dispatch: (action: any) => void,
+    return <QueryWindowControlled state={state} dispatch={dispatch} />
 }
 
-export default function QueryWindow(props: IProps) {
+export function QueryWindowControlled(props: {
+    state: QueryWindowState,
+    dispatch: (action: any) => void,
+}) {
     let query = props.state.query;
     let editing = props.state.editingQuery;
     let resultsFor = props.state.resultsForQuery;
diff --git a/client/src/components/windows/song/SongWindow.tsx b/client/src/components/windows/song/SongWindow.tsx
index 3a54b5e..6016366 100644
--- a/client/src/components/windows/song/SongWindow.tsx
+++ b/client/src/components/windows/song/SongWindow.tsx
@@ -1,4 +1,4 @@
-import React, { useEffect, useState } from 'react';
+import React, { useEffect, useState, useReducer } from 'react';
 import { Box, Typography, IconButton, Button, CircularProgress } from '@material-ui/core';
 import AudiotrackIcon from '@material-ui/icons/Audiotrack';
 import PersonIcon from '@material-ui/icons/Person';
@@ -13,6 +13,8 @@ import SubmitChangesButton from '../../common/SubmitChangesButton';
 import { saveSongChanges } from '../../../lib/saveChanges';
 import { QueryLeafBy, QueryLeafOp } from '../../../lib/query/Query';
 import { querySongs } from '../../../lib/backend/queries';
+import { songGetters } from '../../../lib/songGetters';
+import { useParams } from 'react-router';
 
 export type SongMetadata = serverApi.SongDetails;
 export type SongMetadataChanges = serverApi.ModifySongRequest;
@@ -59,7 +61,21 @@ export async function getSongMetadata(id: number) {
     }))[0];
 }
 
-export default function SongWindow(props: IProps) {
+export default function SongWindow(props: {}) {
+    const { id } = useParams();
+    const [state, dispatch] = useReducer(SongWindowReducer, {
+        id: id,
+        metadata: null,
+        pendingChanges: null,
+    });
+
+    return <SongWindowControlled state={state} dispatch={dispatch} />
+}
+
+export function SongWindowControlled(props: {
+    state: SongWindowState,
+    dispatch: (action: any) => void,
+}) {
     let metadata = props.state.metadata;
     let pendingChanges = props.state.pendingChanges;
 
diff --git a/client/src/components/windows/tag/TagWindow.tsx b/client/src/components/windows/tag/TagWindow.tsx
index 3ec693e..fd092ee 100644
--- a/client/src/components/windows/tag/TagWindow.tsx
+++ b/client/src/components/windows/tag/TagWindow.tsx
@@ -1,4 +1,4 @@
-import React, { useEffect, useState } from 'react';
+import React, { useEffect, useState, useReducer } from 'react';
 import { Box, Typography, IconButton, CircularProgress } from '@material-ui/core';
 import LocalOfferIcon from '@material-ui/icons/LocalOffer';
 import * as serverApi from '../../../api';
@@ -10,6 +10,8 @@ import SongTable, { SongGetters } from '../../tables/ResultsTable';
 import { saveTagChanges } from '../../../lib/saveChanges';
 import { queryTags, querySongs } from '../../../lib/backend/queries';
 import { QueryLeafBy, QueryLeafOp } from '../../../lib/query/Query';
+import { songGetters } from '../../../lib/songGetters';
+import { useParams } from 'react-router';
 var _ = require('lodash');
 
 export interface FullTagMetadata extends serverApi.TagDetails {
@@ -50,11 +52,6 @@ export function TagWindowReducer(state: TagWindowState, action: any) {
     }
 }
 
-export interface IProps {
-    state: TagWindowState,
-    dispatch: (action: any) => void,
-}
-
 export async function getTagMetadata(id: number) {
     var tag = (await queryTags({
         query: {
@@ -79,7 +76,23 @@ export async function getTagMetadata(id: number) {
     return tag;
 }
 
-export default function TagWindow(props: IProps) {
+export default function TagWindow(props: {}) {
+    const { id } = useParams();
+    const [state, dispatch] = useReducer(TagWindowReducer,{
+        id: id,
+        metadata: null,
+        pendingChanges: null,
+        songGetters: songGetters,
+        songsWithTag: null,
+    });
+
+    return <TagWindowControlled state={state} dispatch={dispatch} />
+}
+
+export function TagWindowControlled(props: {
+    state: TagWindowState,
+    dispatch: (action: any) => void,
+}) {
     let metadata = props.state.metadata;
     let pendingChanges = props.state.pendingChanges;