Touhou Genso Wanderer Reloaded

[Resistiv]

Alright, so I took a look at the file in HxD and I found the file had an "AQUA" header (in hex "41 51 55 41"). I've never seen this kind of format before, but I'm gonna assume that it's an encrypted format used by AQUASTYLE, who developed the game. I took a closer look at most of the data in the file, but I honestly couldn't interpret anything that might aid in the extraction of the BGM.

Also tried putting it through Puggsoy's Video Game Sound Converter, but the program threw an error.

Is there any sort of documentation within the files that may denote a certain sound library being used?