diff --git a/worker/lyra_worker/monitor.py b/worker/lyra_worker/monitor.py
index b7fcbf8..15f9df7 100644
--- a/worker/lyra_worker/monitor.py
+++ b/worker/lyra_worker/monitor.py
@@ -4,6 +4,7 @@ from datetime import date, datetime
 import psycopg
 
 from lyra_worker.browser import MbBrowser
+from lyra_worker.release_filter import is_core_release
 
 _TRUE = {"1", "true", "yes", "on"}
 
@@ -58,7 +59,11 @@ def discover(conn: psycopg.Connection, browser: MbBrowser, cfg: MonitorConfig) -
     inserted = 0
     for artist_id, mbid, name, auto_future, monitor_from in artists:
         for rg in browser.browse_release_groups(mbid):
-            monitored = bool(auto_future) and _is_new(rg.first_release_date, monitor_from)
+            monitored = (
+                bool(auto_future)
+                and _is_new(rg.first_release_date, monitor_from)
+                and is_core_release(rg.primary_type, rg.secondary_types)
+            )
             with conn.cursor() as cur:
                 cur.execute(
                     'INSERT INTO "MonitoredRelease" (id, "watchedArtistId", "artistMbid", '
diff --git a/worker/tests/test_monitor_discover.py b/worker/tests/test_monitor_discover.py
index 92055af..e1f22b2 100644
--- a/worker/tests/test_monitor_discover.py
+++ b/worker/tests/test_monitor_discover.py
@@ -25,6 +25,20 @@ def test_discover_auto_monitor_future_only_flags_new(conn):
     assert _monitored_map(conn) == {"rg-old": False, "rg-new": True}  # only the future one is monitored
 
 
+def test_discover_auto_monitor_skips_non_core_releases(conn):
+    # autoMonitorFuture must only auto-flag *core* studio releases; a new live album or
+    # compilation is recorded (unmonitored) but never auto-monitored.
+    insert_watched_artist(conn, mbid="a1", name="X", auto_monitor_future=True)
+    releases = [
+        ReleaseGroupInfo("rg-studio", "Studio", "Album", (), "2999-01-01"),
+        ReleaseGroupInfo("rg-live", "Live", "Album", ("Live",), "2999-02-01"),
+        ReleaseGroupInfo("rg-comp", "Best Of", "Album", ("Compilation",), "2999-03-01"),
+    ]
+    browser = FakeMbBrowser(releases={"a1": releases})
+    discover(conn, browser, MonitorConfig(enabled=True))
+    assert _monitored_map(conn) == {"rg-studio": True, "rg-live": False, "rg-comp": False}
+
+
 def test_discover_default_off_monitors_nothing(conn):
     insert_watched_artist(conn, mbid="a1", name="X", auto_monitor_future=False)
     browser = FakeMbBrowser(releases={"a1": _releases()})