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"): They were ably supported by the chamber orchestra of Abraham's music school - "L'Atelier de Musique de Calcutta".
Relevant evidence: No