Listen to Kuyilukku Ku Ku online. Kuyilukku Ku Ku is a Tamil language song and is sung by S.P. Balasubrahmanyam and Hariharan. Kuyilukku Ku Ku, from the album Best Of Hariharan, was released in the year 2016. The duration of the song is 5:03. Download Tamil songs online from JioSaavn.