Question: Abar Bochhor Tirish Pore was organized in part in memory of an Indian Bengali singer, songwriter, bassist, and composer, who co-founded what progressive rock band?
Sentence (from "Debojit Saha"): Debojit Saha, (Bengali: দেবজিৎ সাহা ) born at Silchar, Assam in a Bengali Hindu family, is an Indian Bengali singer and past winner of Zee TV's reality series, Sa Re Ga Ma Pa Challenge 2005.
Relevant evidence: No