+        user = info.get('user') or {}
+
+        thumbnails = []
+        artwork_url = info.get('artwork_url')
+        thumbnail = artwork_url or user.get('avatar_url')
+        if isinstance(thumbnail, compat_str):
+            if re.search(self._IMAGE_REPL_RE, thumbnail):
+                for image_id, size in self._ARTWORK_MAP.items():
+                    i = {
+                        'id': image_id,
+                        'url': re.sub(self._IMAGE_REPL_RE, '-%s.jpg' % image_id, thumbnail),
+                    }
+                    if image_id == 'tiny' and not artwork_url:
+                        size = 18
+                    elif image_id == 'original':
+                        i['preference'] = 10
+                    if size:
+                        i.update({
+                            'width': size,
+                            'height': size,
+                        })
+                    thumbnails.append(i)
+            else:
+                thumbnails = [{'url': thumbnail}]
+
+        def extract_count(key):
+            return int_or_none(info.get('%s_count' % key))
+
+        return {
+            'id': track_id,
+            'uploader': user.get('username'),
+            'uploader_id': str_or_none(user.get('id')) or user.get('permalink'),
+            'uploader_url': user.get('permalink_url'),
+            'timestamp': unified_timestamp(info.get('created_at')),
+            'title': title,
+            'description': info.get('description'),
+            'thumbnails': thumbnails,
+            'duration': float_or_none(info.get('duration'), 1000),
+            'webpage_url': info.get('permalink_url'),
+            'license': info.get('license'),
+            'view_count': extract_count('playback'),
+            'like_count': extract_count('favoritings') or extract_count('likes'),
+            'comment_count': extract_count('comment'),
+            'repost_count': extract_count('reposts'),
+            'genre': info.get('genre'),
+            'formats': formats
+        }