Renowned music director MS.Viswhwanathan is in critical condition. according to the sources MS.Vishwanathan who was admitted in Chennai Hospital couple of weeks back due to breathing ailments. According to doctors his condition worsened and he is suffering from memory loss. Doctors are currently treating in ICU. 87 year MS.Vishwanathan is popular for many hit songs in more than 1200 films like Maro Charitra, Akali Rajyam ,Antuleni Katha. Celebrities like Ialayaraja and SP.Balasubrahmanyam inquired about his health.