diff --git a/backend/app/config.py b/backend/app/config.py
index 1f940c6..bf2bc06 100644
--- a/backend/app/config.py
+++ b/backend/app/config.py
@@ -186,6 +186,8 @@ class Settings(BaseSettings):
     song_lineup_fallback_minutes_before: int = 40
     # 생성 대상 점검·생성 상태 폴링 주기(초)
     song_tick_seconds: int = 120
+    # 응원가 커버 합성 시 KBO 로고를 가져올 내부 프론트 주소 (docker 네트워크)
+    internal_frontend_base: str = "http://frontend"
 
     # ── 외부 연동: 이메일 ─────────────────────────────────────
     # 1순위: Azure Communication Services(ACS) Email — endpoint + accesskey.
diff --git a/backend/app/routers/share.py b/backend/app/routers/share.py
index be2132d..c967129 100644
--- a/backend/app/routers/share.py
+++ b/backend/app/routers/share.py
@@ -73,11 +73,14 @@ async def song_share(
     )
 
     origin = settings.public_origin.rstrip("/")
-    # 썸네일: Suno 앨범아트(외부 CDN 절대 URL) → 없으면 기본 카드
-    cover = ""
+    # 썸네일: 합성 커버(Suno 아트 + 팀 로고, 1200x630) → 곡 없으면 기본 카드
     if s and s.tracks:
-        cover = (s.tracks[0] or {}).get("imageUrl") or ""
-    img_url = cover if cover.startswith("http") else f"{origin}{DEFAULT_OG}?v=2"
+        img_url = (
+            f"{origin}/api/songs/cover/{html.escape(match_id)}/"
+            f"{html.escape(team_code)}?v={(s.task_id or '')[:8]}"
+        )
+    else:
+        img_url = f"{origin}{DEFAULT_OG}?v=2"
 
     page_url = f"{origin}/song/{html.escape(match_id)}/{html.escape(team_code)}"
     t = html.escape(title)
diff --git a/backend/app/routers/songs.py b/backend/app/routers/songs.py
index 36e0f2c..c4ca447 100644
--- a/backend/app/routers/songs.py
+++ b/backend/app/routers/songs.py
@@ -1,12 +1,14 @@
-"""오늘의 응원가 API — 조회(공개) · Suno 콜백 싱크 · 관리자 수동 생성."""
+"""오늘의 응원가 API — 조회(공개) · 커버 합성 · Suno 콜백 싱크 · 관리자 수동 생성."""
 from __future__ import annotations
 
+import logging
 from datetime import datetime, timedelta, timezone
 
-from fastapi import APIRouter, Depends, Request
+from fastapi import APIRouter, Depends, HTTPException, Request, Response
 from sqlalchemy import select
 from sqlalchemy.ext.asyncio import AsyncSession
 
+from ..config import settings
 from ..database import get_db
 from ..models import Song
 from ..services.songs import poll_generating, start_due_songs
@@ -14,10 +16,22 @@ from .admin import require_admin
 
 router = APIRouter(prefix="/api/songs", tags=["songs"])
 
+log = logging.getLogger("triplepick.songs")
+
 KST = timezone(timedelta(hours=9))
 
 
+def _cover_path(s: Song) -> str:
+    # v= 캐시버스터: 업그레이드(재생성)로 task 가 바뀌면 새 커버로
+    return f"/api/songs/cover/{s.match_id}/{s.team_code}?v={(s.task_id or '')[:8]}"
+
+
 def _song_out(s: Song) -> dict:
+    # Suno 는 생성당 2트랙을 주지만 노출은 팀당 1곡만 (첫 트랙).
+    # 커버는 Suno 아트 + 팀 로고 합성본으로 교체.
+    tracks = [
+        {**t, "imageUrl": _cover_path(s)} for t in (s.tracks or [])[:1]
+    ]
     return {
         "matchId": s.match_id,
         "league": s.league,
@@ -25,11 +39,101 @@ def _song_out(s: Song) -> dict:
         "teamName": s.team_name,
         "title": s.title,
         "lyrics": s.lyrics,
-        # Suno 는 생성당 2트랙을 주지만 노출은 팀당 1곡만 (첫 트랙)
-        "tracks": (s.tracks or [])[:1],
+        "tracks": tracks,
     }
 
 
+# ── 커버 합성 (Suno 아트 배경 + 팀 로고 중앙) ──────────────────
+_COVER_W, _COVER_H = 1200, 630  # OG 권장 규격 — 플레이어 썸네일은 중앙 크롭
+_cover_cache: dict[str, bytes] = {}
+
+
+async def _fetch_bytes(url: str) -> bytes | None:
+    import httpx
+
+    try:
+        async with httpx.AsyncClient(timeout=15, follow_redirects=True) as c:
+            r = await c.get(url)
+            r.raise_for_status()
+            return r.content
+    except Exception as e:  # noqa: BLE001
+        log.warning("cover 소스 다운로드 실패 %s: %s", url, e)
+        return None
+
+
+def _logo_url(s: Song) -> str | None:
+    if s.league == "kbo":
+        return f"{settings.internal_frontend_base}/assets/teams/kbo/{s.team_code.lower()}.png"
+    if s.league == "mlb":
+        from ..teams_baseball import MLB_TEAMS
+
+        mlb_id = (MLB_TEAMS.get(s.team_code) or {}).get("mlb_id")
+        if mlb_id:
+            return f"https://midfield.mlbstatic.com/v1/team/{mlb_id}/spots/500"
+    return None
+
+
+def _compose(bg_bytes: bytes | None, logo_bytes: bytes | None) -> bytes:
+    import io
+
+    from PIL import Image, ImageEnhance
+
+    canvas = Image.new("RGB", (_COVER_W, _COVER_H), (16, 20, 26))
+    if bg_bytes:
+        try:
+            bg = Image.open(io.BytesIO(bg_bytes)).convert("RGB")
+            # cover-crop: 비율 유지 확대 후 중앙 크롭
+            scale = max(_COVER_W / bg.width, _COVER_H / bg.height)
+            bg = bg.resize((round(bg.width * scale), round(bg.height * scale)))
+            x = (bg.width - _COVER_W) // 2
+            y = (bg.height - _COVER_H) // 2
+            bg = bg.crop((x, y, x + _COVER_W, y + _COVER_H))
+            canvas = ImageEnhance.Brightness(bg).enhance(0.5)  # 로고 대비용 감광
+        except Exception as e:  # noqa: BLE001
+            log.warning("cover 배경 처리 실패: %s", e)
+    if logo_bytes:
+        try:
+            logo = Image.open(io.BytesIO(logo_bytes)).convert("RGBA")
+            h = 340
+            w = round(logo.width * h / logo.height)
+            if w > 560:
+                w, h = 560, round(logo.height * 560 / logo.width)
+            logo = logo.resize((w, h))
+            canvas.paste(logo, ((_COVER_W - w) // 2, (_COVER_H - h) // 2), logo)
+        except Exception as e:  # noqa: BLE001
+            log.warning("cover 로고 처리 실패: %s", e)
+    out = io.BytesIO()
+    canvas.save(out, "JPEG", quality=88)
+    return out.getvalue()
+
+
+@router.get("/cover/{match_id}/{team_code}")
+async def song_cover(
+    match_id: str, team_code: str, db: AsyncSession = Depends(get_db)
+) -> Response:
+    s = (
+        await db.execute(
+            select(Song).where(Song.match_id == match_id, Song.team_code == team_code)
+        )
+    ).scalar_one_or_none()
+    if not s:
+        raise HTTPException(status_code=404, detail="SONG_NOT_FOUND")
+    key = f"{match_id}:{team_code}:{s.task_id}"
+    if key not in _cover_cache:
+        if len(_cover_cache) > 200:
+            _cover_cache.clear()
+        suno_img = ((s.tracks or [{}])[0] or {}).get("imageUrl") or ""
+        bg = await _fetch_bytes(suno_img) if suno_img.startswith("http") else None
+        logo_url = _logo_url(s)
+        logo = await _fetch_bytes(logo_url) if logo_url else None
+        _cover_cache[key] = _compose(bg, logo)
+    return Response(
+        content=_cover_cache[key],
+        media_type="image/jpeg",
+        headers={"Cache-Control": "public, max-age=86400"},
+    )
+
+
 @router.get("/today")
 async def today_songs(league: str = "", db: AsyncSession = Depends(get_db)) -> list[dict]:
     """오늘의 응원가 목록 — league 미지정 시 전 리그(kbo+mlb)."""
diff --git a/backend/requirements.txt b/backend/requirements.txt
index c39ff5e..05ed0fd 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -14,3 +14,4 @@ python-jose[cryptography]==3.5.0
 anthropic==0.69.0
 openai==1.59.6
 google-genai==0.8.0
+pillow==11.1.0