diff --git a/build_disc_cache.py b/build_disc_cache.py
index 2d9f672..ac3183c 100644
--- a/build_disc_cache.py
+++ b/build_disc_cache.py
@@ -20,9 +20,28 @@ def main():
     rg.execute("TRUNCATE disc_cache")
     n = 0
     for i in range(0, len(ids), 5000):
+        # artists_sort is NULL for most of this dump (~9.1M of 10.4M releases), and reading it
+        # alone silently cached a NULL artist — which is not merely a blank column in the admin
+        # list: dc.artist is also what the admin SEARCH and SORT run on, so an affected record
+        # becomes unfindable by artist name. Seen live on release 447087, cached as title
+        # "Mezcal" with no artist while its genre/style/label/country all populated, because
+        # those read disc_release_* and only the artist reads this cache.
+        #
+        # The name is in release_artist regardless. extra=0 is the RELEASE artist; extra=1 rows
+        # are credits — 447087 also lists Carl Clarke and Jim Eliot as Producers, and folding
+        # those into the artist name would be worse than leaving it blank.
+        #
+        # Comma-joined rather than reconstructing Discogs' join_string ("&", "Featuring"): this
+        # only fires where artists_sort is already NULL, and a predictable "A, B" beats both NULL
+        # and a dangling separator.
         rows = dg.execute(
-            "SELECT id, title, artists_sort, COALESCE(thumb_local_url, thumb), estimated_weight "
-            "FROM release WHERE id = ANY(%s)", (ids[i:i + 5000],)).fetchall()
+            "SELECT r.id, r.title, "
+            "       COALESCE(r.artists_sort, ("
+            "         SELECT string_agg(ra.artist_name, ', ' ORDER BY ra.position, ra.id) "
+            "         FROM release_artist ra "
+            "         WHERE ra.release_id = r.id AND ra.extra = 0)), "
+            "       COALESCE(r.thumb_local_url, r.thumb), r.estimated_weight "
+            "FROM release r WHERE r.id = ANY(%s)", (ids[i:i + 5000],)).fetchall()
         with rg.cursor() as c:
             c.executemany(
                 "INSERT INTO disc_cache (release_id, title, artist, thumb, weight) "