What is "haramoni"

Haramoni is the title of 13-volume collection of Bengali folksongs by Muhammed Mansooruddin. Mansooruddin collected more than 5000 folksongs from different parts of Bengal. He compiled them in a series of volumes and the titled them after the name of a regular section of monthly literary magazine Probashi that was earmarked for publishing folk songs collected from rural areas. Haramoni literally means Lost Jewels.