diff --git a/hoppys-adventure-arcade/scenes/credits/credits.json b/hoppys-adventure-arcade/scenes/credits/credits.json
index 4c850734..c3497983 100644
--- a/hoppys-adventure-arcade/scenes/credits/credits.json
+++ b/hoppys-adventure-arcade/scenes/credits/credits.json
@@ -6,7 +6,88 @@
    "lines": [
     "Music by Erik Thorelli"
    ],
-   "tracks": []
+   "tracks": [
+    {
+     "title": "Send in the Rabbit",
+     "used_by": "Booth attract mode"
+    },
+    {
+     "title": "Send in the Rabbit (Instrumental)",
+     "used_by": "Title screen"
+    },
+    {
+     "title": "Cable Car Hop",
+     "used_by": "Bay Area Blitz"
+    },
+    {
+     "title": "Merge Conflict Monster",
+     "used_by": "Bay Area Blitz boss"
+    },
+    {
+     "title": "Zero-G Deploy",
+     "used_by": "Orbital Ops"
+    },
+    {
+     "title": "The Deprecated API",
+     "used_by": "Orbital Ops boss"
+    },
+    {
+     "title": "The Enchanted Repo",
+     "used_by": "The Enchanted Repo"
+    },
+    {
+     "title": "The Legacy Monolith",
+     "used_by": "The Enchanted Repo boss"
+    },
+    {
+     "title": "Stage Clear",
+     "used_by": "Platformer results"
+    },
+    {
+     "title": "CLI / IDE District",
+     "used_by": "Code City Brawl"
+    },
+    {
+     "title": "Security Sector",
+     "used_by": "Code City Brawl"
+    },
+    {
+     "title": "Git Repository HQ",
+     "used_by": "Code City Brawl"
+    },
+    {
+     "title": "District Boss",
+     "used_by": "Code City Brawl: Stack Overflow and Zero-Day"
+    },
+    {
+     "title": "The Grand Merge Conflict",
+     "used_by": "Code City Brawl final boss"
+    },
+    {
+     "title": "The Generation Floor",
+     "used_by": "Heroes vs. Villains"
+    },
+    {
+     "title": "AI SLOP",
+     "used_by": "Heroes vs. Villains boss"
+    },
+    {
+     "title": "The Review Gauntlet",
+     "used_by": "Heroes vs. Villains"
+    },
+    {
+     "title": "Agent Army and the 10,000-Line PR",
+     "used_by": "Heroes vs. Villains bosses"
+    },
+    {
+     "title": "The Agentic Core",
+     "used_by": "Heroes vs. Villains"
+    },
+    {
+     "title": "Machine-Speed Hacker",
+     "used_by": "Heroes vs. Villains final boss"
+    }
+   ]
   }
  ]
 }
diff --git a/hoppys-adventure-arcade/tests/credits_screen.gd b/hoppys-adventure-arcade/tests/credits_screen.gd
index b553bc5e..6d99e760 100644
--- a/hoppys-adventure-arcade/tests/credits_screen.gd
+++ b/hoppys-adventure-arcade/tests/credits_screen.gd
@@ -4,6 +4,13 @@ extends SceneTree
 ## license; a track added to credits.json shows up; it scrolls by itself and by hand; Esc and the
 ## Back button return to the hub. Run headless with --script res://tests/credits_screen.gd.
 const Credits := preload("res://scenes/credits/credits.gd")
+## The original tracks that play in the game (Assets/Audio/**/PROMPTS.md), kept apart from credits.json
+## so a track dropped from the credits fails the suite.
+const ORIGINAL_TRACKS := ["Send in the Rabbit", "Send in the Rabbit (Instrumental)", "Cable Car Hop",
+	"Merge Conflict Monster", "Zero-G Deploy", "The Deprecated API", "The Enchanted Repo", "The Legacy Monolith",
+	"Stage Clear", "CLI / IDE District", "Security Sector", "Git Repository HQ", "District Boss",
+	"The Grand Merge Conflict", "The Generation Floor", "AI SLOP", "The Review Gauntlet",
+	"Agent Army and the 10,000-Line PR", "The Agentic Core", "Machine-Speed Hacker"]
 var failures := 0
 var router: Node
 
@@ -54,6 +61,19 @@ func run() -> void:
 	check(not written.is_empty() and written[0].title == "Original music"
 		and "Music by Erik Thorelli" in written[0].lines and written[0].tracks is Array,
 		"credits.json opens with Original music, by Erik Thorelli, and a tracks list to extend")
+	var music_tracks: Array = written[0].tracks if not written.is_empty() else []
+	var track_titles := {}
+	for track: Variant in music_tracks:
+		if track is Dictionary and track.get("title", "") is String and track.get("title", "") != "" \
+				and track.get("used_by", "") is String and track.get("used_by", "") != "":
+			track_titles[track.title] = "%s  ·  %s" % [track.title, track.used_by]
+	check(music_tracks.size() > 0 and track_titles.size() == music_tracks.size(),
+		"Every original track has a unique title and the part of the game it plays in (%d tracks)" % music_tracks.size())
+	var expected_titles := {}
+	for title in ORIGINAL_TRACKS:
+		expected_titles[title] = true
+	check(track_titles.keys().size() == ORIGINAL_TRACKS.size() and track_titles.keys().all(func(t: String) -> bool: return expected_titles.has(t)),
+		"credits.json lists exactly the %d original tracks that play in the game" % ORIGINAL_TRACKS.size())
 	var all_credits: Array = []
 	for section in generated:
 		all_credits.append_array(section.credits)
@@ -76,6 +96,9 @@ func run() -> void:
 	var shown := texts(screen)
 	check("ORIGINAL MUSIC" in shown and "Music by Erik Thorelli" in shown,
 		"The screen credits the original music to Erik Thorelli")
+	var unlisted := track_titles.keys().filter(func(title: String) -> bool: return not track_titles[title] in shown)
+	check(not track_titles.is_empty() and unlisted.is_empty(),
+		"The screen lists every original track title%s" % ("" if unlisted.is_empty() else " (missing: %s)" % ", ".join(unlisted)))
 	var missing: Array = []
 	var unlicensed: Array = []
 	for entry: Dictionary in all_credits: