diff --git a/src/components/Sidebar.svelte b/src/components/Sidebar.svelte
index 312bead..e55a213 100644
--- a/src/components/Sidebar.svelte
+++ b/src/components/Sidebar.svelte
@@ -82,7 +82,15 @@
                 day = k;
                 rows.push({ kind: "day", label: k, key: `d:${k}` });
             }
-            rows.push({ kind: "album", album: a, key: `a:${a.album_id}` });
+            // Two id realms, so the key must carry the realm: catalog rows
+            // have album_id NULL, and keying them all `a:null` was a
+            // duplicate-key crash that silently killed this whole list the
+            // moment TWO streamed albums entered history (2026-08-01).
+            rows.push({
+                kind: "album",
+                album: a,
+                key: a.kind === "catalog" ? `c:${a.catalog_album_id}` : `l:${a.album_id}`,
+            });
         }
         return rows;
     });