In 1935, together with Panassié he founded Le Jazz Hot, one of the oldest jazz magazines. During World War II Delaunay was a member of the Resistance, but continued leading the Hot Club. In 1948 Delaunay founded the record label Disques Vogue. He is author of the famous Hot Discography with five editions in England, France and the US (the first jazz discography) and worked also as artist. Delaunay died in Paris of Parkinson's disease in 1988.