He had a real passion for music, and for some years he played the cello in an orchestra that was featured in Christian radio broadcasts.
في سنة ١٩٢٥ ،‏ اصبح كارل عضوا في هيئة مستخدَمي المركز الرئيسي ،‏ وعمل اولا في المطبعة .‏