The choir was founded in June 2017 by graduates of Chiba Prefectural Makuhari Sogo High School Choir. Under the direction of Atsuko Sangu, the school's former teacher, it was founded by a group of alumni of different ages. The choir aims to create a richer ensemble while deepening their understanding of the music and texts so that they can maximize their beauty. The name of the choir, "Chœur Clarté," means "transparent choir" in French. The name is inspired by the Makuhari Sogo High School Choir's song "Transparently" (poem by Sakon So, music by Akira Miyoshi). This song was the school song of Makuhari West High School, the predecessor of Makuhari Sogo High School, and has been sung as the choir's song since its inception. We also sing this song as a choir and try to achieve a " transparent voice".