Otamatone is a cute, quirky, and fun to play electronic musical instrument characterized by its eighth note-shaped body, adorable moving mouth, and silly, buzzing, amusingly off-key tone and sound. Developed by design firm Maywa Denki, it was first released in Japan in 2009 and has been the country's best-selling musical toy ever since. Otamatone Melody is a mini version of the regular size Otamatone that is more portable easily attachable to backpacks, bags, purses, and more.