 With the addition of Reinhardt's brother Joseph on second rhythm guitar, the quintet popularized the gypsy jazz style.The group began its recording career in September 1934, releasing two titles on the Odeon label under the name "Delaunay’s Jazz".A December 1934 session produced the first recordings released under the name "Django Reinhardt et le Quintette du Hot Club de France, avec Stéphane Grappelly" (with Django's name misspelled as "Djungo").