In 1947, Ishibashi appeared as a member of the choir in Miho Nagato Opera Company's first performance, "Madame Butterfly." Finally, a pianist of the band "Honey Jokers" dedicated to the expeditionary force club collapsed due to acute pneumonia, so he was overwhelmed by the manager and participated in the audition to fill the vacancy and made his debut as a jazz man. Until then, Ishibashi began to liked classical music and hated jazz, but the mighty meals of the expeditionary force club caught up with him and he turned to jazz lovers.