diff --git a/packages/frontend/assets/room/objects/piano/piano.blend b/packages/frontend/assets/room/objects/piano/piano.blend
index 7653cdf672..1a60e23c7f 100644
Binary files a/packages/frontend/assets/room/objects/piano/piano.blend and b/packages/frontend/assets/room/objects/piano/piano.blend differ
diff --git a/packages/frontend/assets/room/objects/piano/piano.glb b/packages/frontend/assets/room/objects/piano/piano.glb
index 7242e78ceb..7006aa681d 100644
Binary files a/packages/frontend/assets/room/objects/piano/piano.glb and b/packages/frontend/assets/room/objects/piano/piano.glb differ
diff --git a/packages/frontend/src/utility/room/object-defs.ts b/packages/frontend/src/utility/room/object-defs.ts
index abf241416c..ce9c7451db 100644
--- a/packages/frontend/src/utility/room/object-defs.ts
+++ b/packages/frontend/src/utility/room/object-defs.ts
@@ -46,6 +46,7 @@ import { openedCardboardBox } from './objects/openedCardboardBox.js';
 import { pachira } from './objects/pachira.js';
 import { pc } from './objects/pc.js';
 import { petBottle } from './objects/petBottle.js';
+import { piano } from './objects/piano.js';
 import { pictureFrame } from './objects/pictureFrame.js';
 import { plant } from './objects/plant.js';
 import { plant2 } from './objects/plant2.js';
@@ -114,6 +115,7 @@ export const OBJECT_DEFS = [
 	pachira,
 	pc,
 	petBottle,
+	piano,
 	pictureFrame,
 	plant,
 	plant2,
diff --git a/packages/frontend/src/utility/room/objects/piano.ts b/packages/frontend/src/utility/room/objects/piano.ts
new file mode 100644
index 0000000000..2877f08f60
--- /dev/null
+++ b/packages/frontend/src/utility/room/objects/piano.ts
@@ -0,0 +1,41 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import * as BABYLON from '@babylonjs/core';
+import { defineObject } from '../engine.js';
+
+export const piano = defineObject({
+	id: 'piano',
+	name: 'Piano',
+	options: {
+		schema: {
+			bodyColor: {
+				type: 'color',
+				label: 'bodyColor',
+			},
+		},
+		default: {
+			bodyColor: [0, 0, 0],
+		},
+	},
+	placement: 'floor',
+	createInstance: ({ options, model }) => {
+		const bodyMaterial = model.findMaterial('__X_BODY__');
+
+		const applyBodyColor = () => {
+			const [r, g, b] = options.bodyColor;
+			bodyMaterial.albedoColor = new BABYLON.Color3(r, g, b);
+		};
+
+		applyBodyColor();
+
+		return {
+			onOptionsUpdated: ([k, v]) => {
+				applyBodyColor();
+			},
+			interactions: {},
+		};
+	},
+});