Lately, he switched to acoustic guitars and focuses on Brazilian flavored smooth jazz. Besically he composes paying attention to melodies coming out of his mind natually and comfortably. As a inprovizationist, his uniqueness can be seen in his playing fast passages with alternate picking by thumb. Along with music activities, he devote his time to music education as a principle of CAT Music College in Osaka. It adds two higher strings to the normal four-string electric bass.
Show plays live for varieties of artists as a supportive member.
Because he loves Brazilian music, he plays with top Blazilian artists in Japan such as Lisa Ono and Yoshiro Nakamura. He tries to merge jazz flavor and improvization into Balazilian music just as 60's musicians challenged. He is also a computer programmer and teachs computer music class at CAT Music College in Osaka. He plays live with many artists very actively. The Aya 3 was formed when Shaw invited Yoshiya to play his percussion with Yoshi Mihara's acoustic guitar.