Listen to Oh Mridule - Sad online. Oh Mridule - Sad is a Malayalam language song and is sung by K.J. Yesudas and M.G. Radhakrishnan. Oh Mridule - Sad, from the album Njaan Ekanaanu, was released in the year 1982. The duration of the song is 4:34. Download Malayalam songs online from JioSaavn.