public function __construct(string $filename)
{
$fileReader = new FileReader($filename);
$version = $fileReader->readPascalString(30);
$this->title = trim($fileReader->readDelphiString());
$this->subtitle = trim($fileReader->readDelphiString());
$this->artist = trim($fileReader->readDelphiString());
$this->album = trim($fileReader->readDelphiString());
$this->composer = trim($fileReader->readDelphiString());
$this->copyright = trim($fileReader->readDelphiString());
$this->transcriber = trim($fileReader->readDelphiString());
$this->instructions = trim($fileReader->readDelphiString());
}