ライプツィヒ歌劇場
Born in Berlin, he studied with Rudolf Neuhaus in Schwerin. He worked at theatres in Schwerin, Stendal, the Meiningen Court Theatre and in Cottbus. In 1958, Wallat was appointed "Erster Kapellmeister" at the Leipzig Opera. He left the GDR shortly before the Wall was built, and was "Erster Kapellmeister" at the Deutsche Oper Berlin from 1964.