wp-includes/ID3/module.tag.id3v1.php:433$OriginalGenrestringstring|false public static function StandardiseID3v1GenreName($OriginalGenre) { if (($GenreID = self::LookupGenreID($OriginalGenre)) !== false) { return self::LookupGenreName($GenreID); } return $OriginalGenre; }Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/ID3/module.tag.id3v1.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.