FGOS-004~5: Furaiki Original Soundtrack

[CHz]

FOG's page for this album indicates that all of the BGM tracks were remastered, but I've neither played this nor heard the music. Any reason for the OST classification?

EDIT: Oh, seems I misunderstood. Looks like, for remastered albums, we're selecting Remaster in addition to the relevant categories? So a remastered OST would have both Original Soundtrack and Remaster instead of only Remaster.