流星少女 ~Little Shooting Star~ || Meteor Girl ~Little Shooting Star~

Vocals: たま (Tama)
Lyrics: Coro
Arranged by: Coro
Album: 東方流星少女 ~Little Shooting Star~ (Touhou Meteor Girl ~Little Shooting Star~) [Official site]
Circle: TAMAONSEN (魂音泉)
Event: C76
Original theme: Love-Coloured Master Spark [恋色マスタースパーク]

you may fantasize

Vocals: 囁一 (Shoichi)
Lyrics: 囁一 (Shoichi)
Arranged by: Punk Dirty Channel
Album: Re1-M-
Circle: Iemitsu.
Event: C76
Original theme: Necrofantasia [ネクロファンタジア]

Small Sweet Melancholy

Vocals: 大瀬良あい (Ai Ohsera), ココ (Koko)
Lyrics: 溝口ゆうま (Mizunokuchi Yuma)
Arranged by: yohine, 溝口ゆうま (Mizunokuchi Yuma)
Album: POD JACK  [Official site]
Circle: A-One
Event: C76
Original theme: Poison Body ~ Forsaken Doll [ポイズンボディ ~ Forsaken Doll]