Listen to Kathal Unthan Perai online. Kathal Unthan Perai is a Tamil language song and is sung by Ramanan, Sujata and S.P.B.. Kathal Unthan Perai, from the album Super Singer Sujatha Special Vol-1, was released in the year 2000. The duration of the song is 4:41. Download Tamil songs online from JioSaavn.