Hanagasa Ondo (花笠音頭) is a folk song from Yamagata Prefecture, Japan. The name literally means "flower straw-hat song." It accompanies a local community dance called the "Hanagasa Odori." (花笠踊り)
The song is in typical swung ondo rhythm, and features a kakegoe found in no other song; "Ha Yassho Makkasho!" The dance is performed with a simple straw hat decorated with synthetic flowers. It is usually performed by women, but men can also join in. The dance movements are different for each gender.
(kakegoe)