Shin'en

Shin'en is a developer of video games, based in Germany. The company has been an official Nintendo third-party developer since 1999, and currently develops for the Nintendo 3DS and Wii U. Shin'en has also developed for the Wii, Nintendo DS, Game Boy Advance and Game Boy Color. Shin'en also created the soundtracks for around 200 video games. They developed the GHX, GAX, DSX, and NAX (which is based on the GAX) handheld audio middleware.

Source: IGDB