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 joined on stage by modern Bangla Rock artists like Pota, Rupam Islam and Anindya Bose along with singers from the Moheen stable like Dibyo Mukhopadhyay and Ritika Sahni.
Relevant evidence: No