There are three of us who played Blue Reflection. I would also give a heads up to Azure Nights which has a pretty good OST.
Other Gust series with great OST: Ar Tonelico and Ar/Ciel no Surge
I haven't played Blue Reflection, but I've listened to the OST almost every other week for nearly a year and a half. It's amazing. It's also absurd because quite a few songs have incomprehensible titles, like this one:
KOSUICHINOKAKUSURANAKIKU.EXE
*chef kiss*, beautiful!
To create Rain World's distinct soundscape, the composers used a technique known as "junk audio." Essentially the idea is to use everyday objects — rusted tin cans, old car parts — record the sounds they make, and then mash them together into a song. "You take it, and you process it, and you amplify it, and it becomes something else,"