Kokusyoku Sumire / 黒色すみれ
Magic Spellsby Kokusyoku Sumire
Zenmai Syoujyobako Circus ぜんまい少女箱サーカスby Kokusyoku Sumire
OCCULTby Kokusyoku Sumire
乙女地獄 Otome Jigokuby 黒色すみれ×蜂鳥あみ太＝４号＋pf佐藤真也 Kokusyoku Sumire x Amita Hachidori + pf Shinya Sato
乙女讃歌 Otome Sankaby 黒色すみれ×蜂鳥あみ太=4号+佐藤真也 / Kokusyoku Sumire×Amita Hachidori + pf Shinya Sato
KS Unpublished Songs
プラハ前奏曲（Prague Prelude）
Kokushoku Sumire (黒色すみれ) was formed in 2004 in Tokyo and consisting of Soprano vocalist Yuka and violinist Sachi.
They are a unique sound, which is a mix of classical, opera, chansons (songs in French), European fairytales and Japanese folksongs.
Their music is categorized as neoclassical or alternative music.