The following music listed below are only samples from the Quin Rose Website (www.quinrose.com), and they are all in Japanese.

You'd notice that many of the songs are sung by ヒサノ. link

From "Eternal Alice":

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Singer: ヒサノ Lyricist: 五月攻 Composer: 鞠

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Singer: ヒサノ Lyricist: 五月攻 Composer: 鞠

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Singer: ヒサノ Lyricist: 五月攻 Composer: 鞠

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Singer: 宮田幸季 Lyricist: 五月攻 Composer: 鞠

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Singer: 平川大輔 Lyricist: 五月攻 Composer: 鞠

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Singer: ヒサノ Lyricist: 五月攻 Composer: 鞠


From "Alice in Deep Sea":

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Singer:...