Listen to Instrumental online. Instrumental is a Bengali language song and is sung by Sandip Gangully, Arpan Thakur Chakraborty, Tarun Chaudhuri and Arijit Chakraborty. Instrumental, from the album Neelaj, was released in the year 2018. The duration of the song is 6:11. Download Bengali songs online from JioSaavn.