diff --git a/packages/backend/src/routes/playlists.ts b/packages/backend/src/routes/playlists.ts
index aab14b3..b1e6e40 100644
--- a/packages/backend/src/routes/playlists.ts
+++ b/packages/backend/src/routes/playlists.ts
@@ -154,6 +154,8 @@ router.post('/reorder-move', async (req: Request, res: Response) => {
         if (insertIndex < 0) insertIndex = without.length;
         without.splice(insertIndex, 0, fromId);
 
+        console.log('[REORDER_MOVE] playlist:', playlistName, 'from:', fromId, 'to:', toId, 'baseLen:', base.length, 'orderLenBefore:', order.length, 'orderLenAfter:', without.length);
+        console.log('[REORDER_MOVE] sample order:', without.slice(0, 5));
         node.order = without; // store full order overlay
         updated = true;
         return node;
diff --git a/packages/backend/src/routes/songs.ts b/packages/backend/src/routes/songs.ts
index 8be0122..3e543f9 100644
--- a/packages/backend/src/routes/songs.ts
+++ b/packages/backend/src/routes/songs.ts
@@ -126,7 +126,8 @@ router.get('/playlist/*', async (req: Request, res: Response) => {
     };
 
     const trackIds = getAllTrackIds(playlist);
-    console.log(`Found ${trackIds.length} tracks in playlist "${playlistName}"`);
+    console.log(`[PLAYLIST_ORDER] ${playlistName} tracks count:`, trackIds.length);
+    console.log('[PLAYLIST_ORDER] first 10 ids:', trackIds.slice(0, 10));
 
     if (trackIds.length === 0) {
       return res.json({
@@ -177,6 +178,7 @@ router.get('/playlist/*', async (req: Request, res: Response) => {
     const pageEnd = Math.min(pageStart + limit, trackIds.length);
     const pageTrackIds = trackIds.slice(pageStart, pageEnd);
 
+    console.log('[PLAYLIST_ORDER] page', page, 'limit', limit, 'slice', pageStart, pageEnd, 'ids:', pageTrackIds);
     const pageSongs = await Song.find({ id: { $in: pageTrackIds } })
       .populate('s3File.musicFileId')
       .lean();
diff --git a/packages/frontend/src/components/PaginatedSongList.tsx b/packages/frontend/src/components/PaginatedSongList.tsx
index b45839a..fc96086 100644
--- a/packages/frontend/src/components/PaginatedSongList.tsx
+++ b/packages/frontend/src/components/PaginatedSongList.tsx
@@ -299,6 +299,7 @@ export const PaginatedSongList: React.FC<PaginatedSongListProps> = memo(({
           }
           const toId = songs[index].id;
           // Simpler and more robust: instruct backend to move fromId before toId
+          console.debug('[Reorder] move request', { playlist: currentPlaylist, fromId, toId });
           await api.moveTrackInPlaylist(currentPlaylist, fromId, toId);
           await onReorder(songs.map(s => s.id)); // trigger refresh via parent
           setDragHoverIndex(null);