sentence: personnel ; iron savior piet sielck lead vocals , guitar , backing vocals joachim '' piesel '' küstner guitar , backing vocals yenz leonhardt bass , backing vocals thomas nack drums , percussion , backing vocals ; additional musicians martin christian ( paragon ) guitar solo on '' wings of deliverance '' ; production piet sielck producer , engineer , mixing , mastering iron savior additional production marko jakobi cover artwork marisa jacobi graphic design olle carlsson photography additional information drums recorded by piet sielck at karo studio , brackel , germany in october 2003 .