Listen to Thankatheril Sharatkaalam online. Thankatheril Sharatkaalam is a Malayalam language song and is sung by Kannur Rajan, K.J. Yesudas and K. S. Chithra. Thankatheril Sharatkaalam, from the album Vadhu Doctoranu, was released in the year 1994. The duration of the song is 5:08. Download Malayalam songs online from JioSaavn.