Santosh is an eyewitness of the suppression imposed on Tharus, the indigenous people inhabiting Banke, Bardiya, Kailali, and Dang districts of Nepal.

He has observed closely the social conflict as a result of the exploitation over the indigenous people by the elites dropped from uphill Nepal.

His popular songs include "Timle parai thane pachhi", "Aauchhi bhani nisthuri le", "Timile bhulna sake pani, and "Timro dilma chot lagda".

[1] His music has been recorded in 14 languages, including Nepali, Hindi, Chinese, Japanese, English, Russian, Korean, French, Spanish, Italian, German, and Thai.

[8] Santosh appears with his social novel Faraina written on the peasant-elite conflict and leadership development of Tharu girl, known as Kamalari (female slave).