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Chatmonchy

is a two-piece all-female rock band which consists of Eriko Hashimoto (guitar, vocals), Akiko Fukuoka (bass, chorus), and formerly Kumiko Takahashi (drums, chorus) who are from Tokushima Prefecture on the island of Shikoku, Japan.

Since 2005, they have been signed to Sony Music Japan's Ki/oon Records record label.