Persona Q2/data.cpk/sound/bgm/bgm.awb

The bgm.awb is an AWB file found in Persona Q2's data.cpk. It contains all the main and DLC background music tracks in ADX format.

VGMToolbox
You can batch extract AWB files using | VGMToolbox. Under VGMToolbox > Misc.Tools > Extraction Tools > Common Archives, choose CRI ACB/AWB Archive Extractor. Then, drag and drop ACB/AWB files. The contents will be dumped to a folder.

ren.bat
After extracting the AWB, the files may appear to be in BIN format even though they're really ADX files. To rectify this, make a new text file named "ren.bat." Open it in Notepad, and enter the following: Save and then run the BAT file by double-clicking it. Every BIN file will instantly be renamed to ADX.