Found this old Gem. Almost 11 years now!
Echoes @ Sanskriti Durga Puja 2012: Rupkothara
Vocals: Srabasti
Keyboard, lead guitar, music arrangement: Biswapesh
Percussions: Samrat
Bass guitar: Angsuman
Rhythm guitar: Sukanta
Backing vocals: Ankur, Gautam
Sound engineering: Shubha