Listen to Kaathu Kaathu Njaanirunna online. Kaathu Kaathu Njaanirunna is a Malayalam language song and is sung by Fervees Fervees and Vidhu Prathap. Kaathu Kaathu Njaanirunna, from the album Mullapoovu, was released in the year 2010. The duration of the song is 4:51. Download Malayalam songs online from JioSaavn.