The first official compilation of the "Yggdra Union" soundtrack was the "Yggdra Union Perfect Audio Collection Plus", released a month after the GBA version's Japanese release. The collection is made up of two discs, the "original BGM" containing songs directly from the GBA version of the game, and the "image BGM" containing instrumented versions of the songs. The compilation also contains six bonus songs, one being a collage of the battle themes and appearing at the end of the "original BGM", and the other five being arrangements of various tracks, placed at the end of the "image BGM". In the soundtrack insert is a large amount of artwork, as well as notes from Shinichi Ito, Minako Adachi and Shigeki Hayashi on the soundtrack itself, and notes on each song's instrumentation, design and implementation.