Claim: Sonha Bihan was founded by Mamta Chandrakar and was aimed to introduce rap music to Bollywood.
Evidence: Sonha-Bihan was aimed to keep the soul of folk music alive in people's heart and mind with this thought Sonha-Bihan performed in front of forty to fifty thousand people in March 1974. Mamta Chandrakar was born in the year 1958 to Mr. Dau Maha Singh Chandrakar who himself had deep knowledge of folk music. The time when Bollywood music was influencing the local folk music, he started a company called "Sonha-Bihan" in 1974.