diff --git a/src/metadata-writer/flacmetata.ts b/src/metadata-writer/flacmetata.ts
index 7e0f3d3..1d34b16 100644
--- a/src/metadata-writer/flacmetata.ts
+++ b/src/metadata-writer/flacmetata.ts
@@ -44,8 +44,10 @@ export const writeMetadataFlac = (
     flac.setTag('EXPLICIT=' + track.EXPLICIT_LYRICS);
   }
 
-  if (track.SNG_CONTRIBUTORS) {
-    flac.setTag(`COPYRIGHT=${RELEASE_YEAR} ${track.SNG_CONTRIBUTORS.main_artist[0]}`);
+  if (track.SNG_CONTRIBUTORS && !Array.isArray(track.SNG_CONTRIBUTORS)) {
+    if (track.SNG_CONTRIBUTORS.main_artist) {
+      flac.setTag(`COPYRIGHT=${RELEASE_YEAR} ${track.SNG_CONTRIBUTORS.main_artist[0]}`);
+    }
     if (track.SNG_CONTRIBUTORS.publisher) {
       flac.setTag('ORGANIZATION=' + track.SNG_CONTRIBUTORS.publisher.join(', '));
     }
diff --git a/src/metadata-writer/id3.ts b/src/metadata-writer/id3.ts
index 808127f..9ab520d 100644
--- a/src/metadata-writer/id3.ts
+++ b/src/metadata-writer/id3.ts
@@ -65,8 +65,10 @@ export const writeMetadataMp3 = (
     writer.setFrame('TPOS', track.DISK_NUMBER).setFrame('TRCK', track.TRACK_NUMBER + '/' + album.nb_tracks);
   }
 
-  if (track.SNG_CONTRIBUTORS) {
-    writer.setFrame('TCOP', `${RELEASE_YEAR} ${track.SNG_CONTRIBUTORS.main_artist[0]}`);
+  if (track.SNG_CONTRIBUTORS && !Array.isArray(track.SNG_CONTRIBUTORS)) {
+    if (track.SNG_CONTRIBUTORS.main_artist) {
+      writer.setFrame('TCOP', `${RELEASE_YEAR} ${track.SNG_CONTRIBUTORS.main_artist[0]}`);
+    }
     if (track.SNG_CONTRIBUTORS.publisher) {
       writer.setFrame('TPUB', track.SNG_CONTRIBUTORS.publisher.join(', '));
     }
diff --git a/src/types/tracks.ts b/src/types/tracks.ts
index 3778548..d3a9c51 100644
--- a/src/types/tracks.ts
+++ b/src/types/tracks.ts
@@ -44,17 +44,19 @@ interface songType {
   SMARTRADIO: string; // 0
   SNG_ID: string; // '3135556'
   SNG_TITLE: string; // 'Harder, Better, Faster, Stronger'
-  SNG_CONTRIBUTORS?: {
-    main_artist: string[]; //['Daft Punk']
-    author?: string[]; // ['Edwin Birdsong', 'Guy-Manuel de Homem-Christo', 'Thomas Bangalter']
-    composer?: string[];
-    musicpublisher?: string[];
-    producer?: string[];
-    publisher: string[];
-    engineer?: string[];
-    writer?: string[];
-    mixer?: string[];
-  };
+  SNG_CONTRIBUTORS?:
+    | {
+        main_artist: string[]; //['Daft Punk']
+        author?: string[]; // ['Edwin Birdsong', 'Guy-Manuel de Homem-Christo', 'Thomas Bangalter']
+        composer?: string[];
+        musicpublisher?: string[];
+        producer?: string[];
+        publisher: string[];
+        engineer?: string[];
+        writer?: string[];
+        mixer?: string[];
+      }
+    | [];
   STATUS: number; // 3
   S_MOD: number; // 0
   S_PREMIUM: number; // 0