Listen to Swamp Thing / Simone Is / Red Letters / Katha online. Swamp Thing / Simone Is / Red Letters / Katha is an English language song and is sung by Edward Ka-Spel. Swamp Thing / Simone Is / Red Letters / Katha, from the album Red Letter, was released in the year 2000. The duration of the song is 12:41. Download English songs online from JioSaavn.