Kazuyuki Sekiguchi
 Kazuyuki Sekiguchi (関口 和之 Sekiguchi Kazuyuki born December 21 1955 in Niigata Prefecture) plays the bass guitar for Southern All Stars. As a solo artist he has played ukulele; he is a fan of Hawaiian music. For nearly twenty years Sekiguchi has worked with Akira Sakuma in the Momotaro Dentetsu video game series as a music producer.