Listen to Ketoo Njan (Duet) online. Ketoo Njan (Duet) is a Malayalam language song and is sung by Sangeeta Prabhu, Najim Arshad, Santhosh Varma and Anil Johnson. Ketoo Njan (Duet), from the album Life of Josutty (Original Motion Picture Soundtrack), was released in the year 2015. The duration of the song is 5:13. Download Malayalam songs online from JioSaavn.