He moved on to Oldenburg, Osnabrück, Staatstheater Darmstadt, Theater Gera [de] (with Walter Bruno Iltz), and Prague.

They developed the so-called Wiener Mozart-Stil (Vienna Mozart Style) together with the conductors Karl Böhm and Josef Krips, with a focus on the psychology of the characters.

[2][3][4] Schuh's production, with Böhm, of Così fan tutte set a standard for later versions of the opera.

The Wiener Mozart-Ensemble [de] successfully toured to Florence, Nice, Paris, Brussels, Amsterdam and London.

In the 1970s, he founded the Salzburger Straßentheater, which he directed, together with his wife, the stage designer and painter Ursula Schuh [de], until his death.