Dhaka, July 27 -- Once hailed as the flamboyant face of Bangladesh's only music-dedicated TV channel, Gaan Bangla, controversial music producer Kaushik Hossain Taposh now finds himself isolated, fearful, and mired in a storm of allegations, legal woes, and bitter reckonings.

Taposh, a former tabla player at a private television channel, saw a meteoric rise during the Sheikh Hasina era, largely credited to his marriage with Farzana Munny, the former premier's trusted beautician and the reported blessings of Hasina's sister, Sheikh Rehana.

His music venture Gaan Bangla, once a heavily promoted project of the Awami League's cultural campaign eventually became a vehicle for cronyism, corruption, and, as fresh revelations suggest, something ...