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 "Abar Bochhor Tirish Pore"): Two of the original ghoras - Ranjon Ghoshal, curated the show and took people down memory lane sharing various anecdotes, while Abraham Mazumder was the symphony conductor.
Relevant evidence: No