(*

@@ -20,4 +20,12 @@ class Song extends BaseModel
     {
         return $this->belongsToMany(ContractDetail::class, 'contract_song', 'song_id', 'contract_detail_id');
     }
+
+    /**
+     * @return \Illuminate\Database\Eloquent\Relations\HasOne
+     */
+    public function cover()
+    {
+        return $this->hasOne(SongFile::class, 'song_id')->where('type', 4);
+    }
 }

+<?php
+
+namespace App\Models\Legal;
+
+use App\Models\BaseModel;
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+
+/**
+ * Class SongFile
+ * @package App\Models\Legal
+ */
+class SongFile extends BaseModel
+{
+    use HasFactory;
+
+}

@@ -32,7 +32,7 @@ class MusicianSongService extends Service
 
 
         $res =  Song::query()->join($songip_table, "{$song_table}.id", '=', "{$songip_table}.song_id")
-                    ->with('contractDetail')->whereIn("{$songip_table}.song_id", $song_ids)->select(["{$song_table}.id", 'publish_song'])
+                    ->with(['contractDetail', 'cover'])->whereIn("{$songip_table}.song_id", $song_ids)->select(["{$song_table}.id", 'publish_song'])
                     ->groupBy(["song_id"])->paginate($this->pageSize);
 
         foreach ($res as &$item) {
@@ -40,7 +40,7 @@ class MusicianSongService extends Service
 
             $item->setAttribute('name', $name);
             $item->setAttribute('singer', $singer);
-            $item->setAttribute('cover', '');
+            $item->setAttribute('cover', $item->cover->url ?: '');
 
             $tmp = $item->toArray();
             if (empty($tmp['contract_detail'])) {