While attending the new year at the Atsugi High School, Yasuda founded the brass band club, was in charge of the alto saxophone, and served as the principal. During his first year of high school, he was planning on attending for the University of Tokyo or the Hitotsubashi University, but when Yasuda was in the third year of high school, he became interested in music and in 1951, he went to the Department of Instruments at the . However, Yasuda was not used to the feudal nature of the classical music world, and due to financial difficulties to keep paying a large monthly fee, he started a part-time job as a jazzman at an expeditionary force club.