diff --git a/tests/integration/materialize-empty-asset-set.test.mjs b/tests/integration/materialize-empty-asset-set.test.mjs
index 7002dd1..8e523f6 100644
--- a/tests/integration/materialize-empty-asset-set.test.mjs
+++ b/tests/integration/materialize-empty-asset-set.test.mjs
@@ -93,6 +93,43 @@ describe('approved asset publication closure', () => {
     await expect(verifyApprovedAssetSet(root)).resolves.toBeUndefined();
   });
 
+  it('rejects an omitted adaptive soundtrack asset', async () => {
+    const root = await createScratchRepository();
+    const adaptiveAsset = Buffer.from('approved adaptive asset');
+    const adaptiveHash = createHash('sha256').update(adaptiveAsset).digest('hex');
+    await writeFile(join(root, 'content/public/asset-manifest.json'), JSON.stringify({ assets: [{
+      id: 'soundtrack-afterglow-opus', fileName: 'nightdrive-afterglow.opus', sha256: adaptiveHash,
+    }] }));
+    await writeFile(join(root, 'content/public/portfolio-content.json'), JSON.stringify({
+      projects: { selected: [{ assetIds: ['soundtrack-afterglow-opus'] }], additional: [] }, toolkit: [], metadata: {},
+    }));
+    await mkdir(join(root, 'inputs/prepared-assets'), { recursive: true });
+    await expect(verifyApprovedAssetSet(root)).rejects.toThrow(/missing prepared asset/i);
+  });
+
+  it('rejects an altered adaptive soundtrack asset', async () => {
+    const root = await createScratchRepository();
+    await writeApprovedSet(root);
+    const adaptiveAsset = Buffer.from('approved adaptive asset');
+    const adaptiveHash = createHash('sha256').update(adaptiveAsset).digest('hex');
+    await writeFile(join(root, 'content/public/asset-manifest.json'), JSON.stringify({ assets: [{
+      id: 'soundtrack-afterglow-opus', fileName: 'nightdrive-afterglow.opus', sha256: adaptiveHash,
+    }] }));
+    await writeFile(join(root, 'content/public/portfolio-content.json'), JSON.stringify({
+      projects: { selected: [{ assetIds: ['soundtrack-afterglow-opus'] }], additional: [] }, toolkit: [], metadata: {},
+    }));
+    await rm(join(root, 'inputs/prepared-assets/approved-image.webp'));
+    await writeFile(join(root, 'inputs/prepared-assets/nightdrive-afterglow.opus'), Buffer.from('altered adaptive asset'));
+    await expect(verifyApprovedAssetSet(root)).rejects.toThrow(/digest|hash/i);
+  });
+
+  it('rejects an unreferenced extra adaptive soundtrack asset', async () => {
+    const root = await createScratchRepository();
+    await writeApprovedSet(root);
+    await writeFile(join(root, 'inputs/prepared-assets/nightdrive-afterglow-extra.opus'), Buffer.from('extra adaptive asset'));
+    await expect(verifyApprovedAssetSet(root)).rejects.toThrow(/extra prepared asset/i);
+  });
+
   it('rejects a symbolic-link prepared-asset directory', async () => {
     const root = await createScratchRepository();
     const target = join(root, 'outside');