Listen to Cool and Deadly Riddim online. Cool and Deadly Riddim is an English language song and is sung by Kemar Flava McGregor and Stephan Warren. Cool and Deadly Riddim, from the album Riddims of Flava McGregor, Vol. 4, was released in the year 2015. The duration of the song is 3:50. Download English songs online from JioSaavn.