diff --git a/src/components/views/rooms/MessageComposer.tsx b/src/components/views/rooms/MessageComposer.tsx
index 4e33fd3022..239969cb82 100644
--- a/src/components/views/rooms/MessageComposer.tsx
+++ b/src/components/views/rooms/MessageComposer.tsx
@@ -308,7 +308,8 @@ export default class MessageComposer extends React.Component<IProps, IState> {
     };
 
     private updateRecordingState() {
-        this.voiceRecording = VoiceRecordingStore.instance.getActiveRecording(this.props.room.roomId);
+        const voiceRecordingId = VoiceRecordingStore.getVoiceRecordingId(this.props.room, this.props.relation);
+        this.voiceRecording = VoiceRecordingStore.instance.getActiveRecording(voiceRecordingId);
         if (this.voiceRecording) {
             // If the recording has already started, it's probably a cached one.
             if (this.voiceRecording.hasRecording && !this.voiceRecording.isRecording) {
@@ -323,7 +324,8 @@ export default class MessageComposer extends React.Component<IProps, IState> {
 
     private onRecordingStarted = () => {
         // update the recording instance, just in case
-        this.voiceRecording = VoiceRecordingStore.instance.getActiveRecording(this.props.room.roomId);
+        const voiceRecordingId = VoiceRecordingStore.getVoiceRecordingId(this.props.room, this.props.relation);
+        this.voiceRecording = VoiceRecordingStore.instance.getActiveRecording(voiceRecordingId);
         this.setState({
             haveRecording: !!this.voiceRecording,
         });
diff --git a/src/components/views/rooms/VoiceRecordComposerTile.tsx b/src/components/views/rooms/VoiceRecordComposerTile.tsx
index 338995c3b9..b25d87a0ce 100644
--- a/src/components/views/rooms/VoiceRecordComposerTile.tsx
+++ b/src/components/views/rooms/VoiceRecordComposerTile.tsx
@@ -64,6 +64,7 @@ interface IState {
 export default class VoiceRecordComposerTile extends React.PureComponent<IProps, IState> {
     static contextType = RoomContext;
     public context!: React.ContextType<typeof RoomContext>;
+    private voiceRecordingId: string;
 
     public constructor(props: IProps) {
         super(props);
@@ -71,10 +72,12 @@ export default class VoiceRecordComposerTile extends React.PureComponent<IProps,
         this.state = {
             recorder: null, // no recording started by default
         };
+
+        this.voiceRecordingId = VoiceRecordingStore.getVoiceRecordingId(this.props.room, this.props.relation);
     }
 
     public componentDidMount() {
-        const recorder = VoiceRecordingStore.instance.getActiveRecording(this.props.room.roomId);
+        const recorder = VoiceRecordingStore.instance.getActiveRecording(this.voiceRecordingId);
         if (recorder) {
             if (recorder.isRecording || !recorder.hasRecording) {
                 logger.warn("Cached recording hasn't ended yet and might cause issues");
@@ -87,7 +90,7 @@ export default class VoiceRecordComposerTile extends React.PureComponent<IProps,
     public async componentWillUnmount() {
         // Stop recording, but keep the recording memory (don't dispose it). This is to let the user
         // come back and finish working with it.
-        const recording = VoiceRecordingStore.instance.getActiveRecording(this.props.room.roomId);
+        const recording = VoiceRecordingStore.instance.getActiveRecording(this.voiceRecordingId);
         await recording?.stop();
 
         // Clean up our listeners by binding a falsy recorder
@@ -106,7 +109,7 @@ export default class VoiceRecordComposerTile extends React.PureComponent<IProps,
 
         let upload: IUpload;
         try {
-            upload = await this.state.recorder.upload(this.props.room.roomId);
+            upload = await this.state.recorder.upload(this.voiceRecordingId);
         } catch (e) {
             logger.error("Error uploading voice message:", e);
 
@@ -179,7 +182,7 @@ export default class VoiceRecordComposerTile extends React.PureComponent<IProps,
     }
 
     private async disposeRecording() {
-        await VoiceRecordingStore.instance.disposeRecording(this.props.room.roomId);
+        await VoiceRecordingStore.instance.disposeRecording(this.voiceRecordingId);
 
         // Reset back to no recording, which means no phase (ie: restart component entirely)
         this.setState({ recorder: null, recordingPhase: null, didUploadFail: false });
@@ -232,8 +235,7 @@ export default class VoiceRecordComposerTile extends React.PureComponent<IProps,
         try {
             // stop any noises which might be happening
             PlaybackManager.instance.pauseAllExcept(null);
-
-            const recorder = VoiceRecordingStore.instance.startRecording(this.props.room.roomId);
+            const recorder = VoiceRecordingStore.instance.startRecording(this.voiceRecordingId);
             await recorder.start();
 
             this.bindNewRecorder(recorder);
@@ -244,7 +246,7 @@ export default class VoiceRecordComposerTile extends React.PureComponent<IProps,
             accessError();
 
             // noinspection ES6MissingAwait - if this goes wrong we don't want it to affect the call stack
-            VoiceRecordingStore.instance.disposeRecording(this.props.room.roomId);
+            VoiceRecordingStore.instance.disposeRecording(this.voiceRecordingId);
         }
     };
 
diff --git a/src/stores/VoiceRecordingStore.ts b/src/stores/VoiceRecordingStore.ts
index c4377fd57d..29af171f6e 100644
--- a/src/stores/VoiceRecordingStore.ts
+++ b/src/stores/VoiceRecordingStore.ts
@@ -15,14 +15,19 @@ limitations under the License.
 */
 
 import { Optional } from "matrix-events-sdk";
+import { Room } from "matrix-js-sdk/src/models/room";
+import { RelationType } from "matrix-js-sdk/src/@types/event";
+import { IEventRelation } from "matrix-js-sdk/src/models/event";
 
 import { AsyncStoreWithClient } from "./AsyncStoreWithClient";
 import defaultDispatcher from "../dispatcher/dispatcher";
 import { ActionPayload } from "../dispatcher/payloads";
 import { VoiceRecording } from "../audio/VoiceRecording";
 
+const SEPARATOR = "|";
+
 interface IState {
-    [roomId: string]: Optional<VoiceRecording>;
+    [voiceRecordingId: string]: Optional<VoiceRecording>;
 }
 
 export class VoiceRecordingStore extends AsyncStoreWithClient<IState> {
@@ -45,48 +50,54 @@ export class VoiceRecordingStore extends AsyncStoreWithClient<IState> {
         return;
     }
 
+    public static getVoiceRecordingId(room: Room, relation?: IEventRelation): string {
+        if (relation?.rel_type === "io.element.thread" || relation?.rel_type === RelationType.Thread) {
+            return room.roomId + SEPARATOR + relation.event_id;
+        } else {
+            return room.roomId;
+        }
+    }
+
     /**
      * Gets the active recording instance, if any.
-     * @param {string} roomId The room ID to get the recording in.
+     * @param {string} voiceRecordingId The room ID (with optionally the thread ID if in one) to get the recording in.
      * @returns {Optional<VoiceRecording>} The recording, if any.
      */
-    public getActiveRecording(roomId: string): Optional<VoiceRecording> {
-        return this.state[roomId];
+    public getActiveRecording(voiceRecordingId: string): Optional<VoiceRecording> {
+        return this.state[voiceRecordingId];
     }
 
     /**
      * Starts a new recording if one isn't already in progress. Note that this simply
      * creates a recording instance - whether or not recording is actively in progress
      * can be seen via the VoiceRecording class.
-     * @param {string} roomId The room ID to start recording in.
+     * @param {string} voiceRecordingId The room ID (with optionally the thread ID if in one) to start recording in.
      * @returns {VoiceRecording} The recording.
      */
-    public startRecording(roomId: string): VoiceRecording {
+    public startRecording(voiceRecordingId: string): VoiceRecording {
         if (!this.matrixClient) throw new Error("Cannot start a recording without a MatrixClient");
-        if (!roomId) throw new Error("Recording must be associated with a room");
-        if (this.state[roomId]) throw new Error("A recording is already in progress");
+        if (!voiceRecordingId) throw new Error("Recording must be associated with a room");
+        if (this.state[voiceRecordingId]) throw new Error("A recording is already in progress");
 
         const recording = new VoiceRecording(this.matrixClient);
 
         // noinspection JSIgnoredPromiseFromCall - we can safely run this async
-        this.updateState({ ...this.state, [roomId]: recording });
+        this.updateState({ ...this.state, [voiceRecordingId]: recording });
 
         return recording;
     }
 
     /**
      * Disposes of the current recording, no matter the state of it.
-     * @param {string} roomId The room ID to dispose of the recording in.
+     * @param {string} voiceRecordingId The room ID (with optionally the thread ID if in one) to dispose of the recording in.
      * @returns {Promise<void>} Resolves when complete.
      */
-    public disposeRecording(roomId: string): Promise<void> {
-        if (this.state[roomId]) {
-            this.state[roomId].destroy(); // stops internally
-        }
+    public disposeRecording(voiceRecordingId: string): Promise<void> {
+        this.state[voiceRecordingId]?.destroy(); // stops internally
 
         const {
             // eslint-disable-next-line @typescript-eslint/no-unused-vars
-            [roomId]: _toDelete,
+            [voiceRecordingId]: _toDelete,
             ...newState
         } = this.state;
         // unexpectedly AsyncStore.updateState merges state