Yamapy-1, whose real name is Yasumasa Yamada (山田 泰正, Yamada Yasumasa), is a music composer and sound editor who was hired by SNK in 1989. He was a member of SNK's Sound Team.
- Robo Army
- Burning Fight
- Buriki One
- Fatal Fury 2
- Fatal Fury Special - also did work for image album
- Fatal Fury: Wild Ambition
- Art of Fighting series - also did work for II's image album
- Samurai Shodown series (II~IV, 64 series, Warriors Rage)
- The King of Fighters series ('95~'97, 2003)
- Cool Cool Toon
- Off Beat Racer!
- SNK vs Capcom: SVC Chaos
- Nakoruru: Ano Hito kara no Okurimono
- Neo Geo Super Live! 1994
- Samurai Remix VA