スイス・ロマンド管弦楽団
His new career began as répétiteur and then director at the Swiss Theater Biel-Solothurn from 1943 to 1946. After the first season at Biel-Solothurn, he served as an assistant to Furtwängler prior to the opening of his second season there. After Biel-Solothurn, he became Ernest Ansermet's assistant with the Orchestre de la Suisse Romande.