Atsuko Iwanaga - is a video game composer. Atsuko Iwanaga began his career in 1995 and has worked for companies such as SEGA. Atsuko Iwanaga's first game was Sonic Labyrinth which was released 28 years ago. Best Game Atsuko Iwanaga contributed to was Sonic Labyrinth. Atsuko Iwanaga's latest work is Sonic Labyrinth which was released 28 years ago.