I've been scrounging around for bit and pieces of the music from the Grisaia franchise, I've got most of it myself already but there's no collection here yet so I figured I'd recommend it. Grisaia no Kajitsu | Fruit of Grisaia
OST - [LACA-9207~8
OP - Rakuen no Tsubasa / Maon Kurosakii [GNCA-0352
ED - Anata no Aishita Sekai / Yoshino Nanjo [GNCA-0354
The ED used for EPs 10, 11, & 12 is: Track 12, Rainy veil from Polyomino / Yanaginagi [GNCA-1423
]Grisaia no Meikyuu | Labyrinth of Grisaia
OST - [LACA-15193
]Grisaia no Rakuen | Eden of Grisaia.
OST - [LACA-9291~2
OP - Setsuna no Kajitsu / Maon Kurosaki [GNCA-0376
ED1 - Tasogare no Starlight / Yoshino Nanjo [GNCA-0362
ED2 - Kimi wo Sagashi ni / Yoshino Nanjo [GNCA-0383
- All 3 EDs also show up in [GNCA-1450
] but without the instrumental versions included.
There's some insert music and one-off EDs that I'm still hunting down the info for, will update with info for those when I have it.Update
- From what I've found of it so far it would appear that most of the insert music comes from the VNs.