is a Japanese composer and sound programmer. He is often regarded as one of the most influential innovators in chiptune and video game music, producing music in a number of genres including rock, jazz, symphonic, and various electronic genres such as house, electro, techno, trance, and hip hop. Koshiro and his sister Ayano founded the game development company Ancient in 1990, of which he remains the president. He has been cited as creating some of the most memorable game music of the 1980s and 1990s contributing for games such as Nihon Falcom's Dragon Slayer and Ys series, as well as Sega's The Revenge of Shinobi and Streets of Rage series. The soundtracks for the latter have been cited by some to be ahead of their time. Biography Early life Koshiro was born in Tokyo on December 12, 1967. His mother, Tomo Koshiro, was a pianist. She taught him how to play the piano at the age of three, and by the age of five, he had a strong command of it. In 1975, he began taking music lessons from Joe Hisaishi and studied with him for three years. Everything Koshiro has learned after that has since been self-taught. While he was still in high school during the early 1980s, Koshiro began composing music on the NEC PC-8801 as a hobby, including mockups of early arcade game music from Namco, Konami, and Sega. The sequencing skills and experience he gained from this would later be utilized in his early video game projects. The video games that influenced him most were The Tower of Druaga (1984), Space Harrier (1985), and Gradius (1985). The video game music soundtracks to these games inspired him to become a video game composer. In a 1992 interview, Koshiro said that his favorite music genres are new wave, dance music, technopop, classical, and hard rock, and that his favorite Western bands are Van Halen and Soul II Soul. Nihon Falcom (1986–1988) Koshiro's first composing job was with Nihon Falcom in 1986 at the age of 18. Falcom used compositions from the PC-8801 demo tape he had sent them in their Dragon Slayer action role-playing game Xanadu Scenario II, for its opening theme and several dungeon levels. He also wrote the opening song in Romancia that same year. His compositions for these early games were influenced by arcade game music and Japanese bands such as The Alfee. He then