Here is a list of all the translations I've done of Koishi's themes. All of these links will redirect you to my tumblr blog, ordered from most recent.
“砂糖菓子とメレンゲの憂鬱” (Melancholy of Candy and Meringue) by アトリエとびうお
“幻想のエニグマ” (Illusionary Engima) by 錯乱のオルフェ
“Clos(ed) my eyes” by ノーストリリア
“Can we communicate ?” by SOUND HOLIC
“S!N!T∀! song” by ハコビバ
"ファンシーストーン" (Fancy Stone)by 文鳥Online。
"こいフラ的魅惑の狂気"(A KoiFlantastic, Charming Madness) by 天然ジェミニ
"disconnect" by 凋叶棕
"last dance of the silent satelite" by Novoyuuparosk