Hanakisou (花帰葬) - Shikata Akiko (志方 あきこ)
Following the trend of music artists you should totally listen to, here’s Shikata Akiko! You might recognize her as the genius behind several Umineko no Naku Koro ni songs, the soundtrack for the game Ar Tonelico, or some songs for the Tales of Symphonia OVA.
My personal favorite of hers is, however, the Hanakisou soundtracks. And, as such, I decided to pick the eponymous song from said album. :> I would highly recommend checking out other songs from the OST. It’s simply gorgeous!
Shikata also runs the doujin circle VAGRANCY (and I would definitely recommend looking at her orgel arranges as well).