In 1925 he became second conductor of the Concerts Pasdeloup, greatly extending his work in purely orchestral music (including an appearance at the Royal Albert Hall, London in 1926); he later served as head conductor and director of the Pasdeloup from 1934–1940. From 1928 to 1934 he became principal conductor of the Orchestre Lamoureux.
In 1925, he became second conductor at the Concerts Pasdeloup, significantly increasing his orchestral music engagements (including a performance at the Royal Albert Hall in London in 1926); later, from 1934 to 1940, he served as head conductor and director of the Pasdeloup. From 1928 to 1934, he was principal conductor of the Orchestre Lamoureux.