Shimofusa’s works include songs such as “Hanabi (Fireworks)”, “Nogiku (Wild Chrysanthemum)”, “Tanabata-sama” and various school songs. “Ichikotsu-chō Koto Kyōsōkyoku (Koto Concerto in Ichikotsu)” which was collaborated with Michio Miyagi and “Shamisen Kyōsōkyoku (Shamisen Concerto)” are two pieces which make use of traditional Japanese instruments. Shimofusa contributed to the field of music education by composing songs and writing harmonies. He also wrote many books about music theory such as “Taiihō (Counterpoint)” and “Sakkyoku-hō (the Way of Composition)”. Most important of all is the “Wasei-gaku (the Laws of Harmony)” which explains the basis of harmony and which has been an important reference to many Japanese musicians. The theory of music scale presented by Shimofusa attracted moreover the attention of the famous musicologist, Fumio Koizumi.