His visits to the studio of Amédée Ozenfant, the founder of Purism, made a strong impression on him, along with the works of Giotto, Fra Angelico and Velasquez.
Purists' attempts to cleanse the language of Germanisms (both real and fictitious) had been occurring by that time.
In Britain, where boogie-woogie, "stride" piano and jump blues were popular in the 1940s, the Humphrey Lyttelton band pioneered a trad revival just after the Second World War, and Ken Colyer's Crane River band added a strong thread of New Orleans purism.