Yūji Koseki

Yūji Koseki was born on August 11, 1909 in Fukushima City, Fukushima, Japan. Active in the film industry, Koseki worked as an original music composer, contributing to the soundtracks of Japanese films during the 1950s.

Koseki is credited with composing the original music for the film The Betrothed released in 1957. Earlier, Koseki composed the original music for 親馬鹿花合戦, a film released in 1953. These works represent the extent of the documented filmography associated with Koseki within the provided records.