Career
Most notably, he has worked on soundtracks of various Dragon Ball video games. Yamamoto has also composed background music for Dragon Ball Kai, a revamped version of the anime series Dragon Ball Z. On March 9, 2011, Toei Animation publicly acknowledged that many of Yamamoto"s musical works for the series infringed upon unidentified third-party copyrights. As a result, Toei removed Yamamoto and replaced his compositions with those from the original Dragon Ball Z series written by Shunsuke Kikuchi.
The plagiarism of these works have been known to fans since May 2010.
His compositions in the games were also replaced.