Not working

lib/music_library_web/live/artist_live/show.ex

@@ -0,0 +1,32 @@
+defmodule MusicLibraryWeb.ArtistLive.Show do
+  use MusicLibraryWeb, :live_view
+
+  alias MusicLibrary.Records
+
+  @impl true
+  def mount(_params, _session, socket) do
+    {:ok, socket}
+  end
+
+  @impl true
+  def handle_params(%{"musicbrainz_id" => musicbrainz_id}, _, socket) do
+    {:ok, artist} = Records.get_artist(musicbrainz_id)
+
+    {:noreply,
+     socket
+     |> assign(:nav_section, :artists)
+     |> assign(:artist, artist)
+     |> assign(:page_title, page_title(socket.assigns.live_action, artist))}
+  end
+
+  defp page_title(:show, artist) do
+    Enum.join(
+      [
+        artist.name,
+        "·",
+        gettext("Details")
+      ],
+      " "
+    )
+  end
+end