Hiroshi Miyama (三山 ひろし, Miyama Hiroshi; born 17 September 1980, in Nankoku, Kōchi) is a Japanese enka singer. His real name is Masaaki Tsuneishi (恒石 正彰, Tsuneishi Masaaki). Miyama's voice gives people a sense of security and vitality ανδ is called "Vitamin Voice" (ビタミンボイス, Bitamin Boisu).
Source: “Hiroshi Miyama”, English Wikipedia (CC BY-SA 4.0), excerpt