Composer Mikis Theodorakis was rushed to a private hospital in Athens after suffering a heart attack.
The 93-year-old remains in the intensive care unit, media report on Sunday afternoon.
Citing members of his family media note that Theodorakis felt uneasy, a pressure on the chest and fast heart beat late on Friday night.
His doctors reportedly said that the big danger is over and they are optimistic, however, they are concerned about his health progress due to his age.
Mikis Theodorakis is Greece’s best-known living composer worldwide.
he has written more than 1000 songs. Among them the music for the films Zorba the Greek (1964), Z (1969), and Serpico (1973).
He composed the “Mauthausen Trilogy” also known as “The Ballad of Mauthausen”, which has been described as the “most beautiful musical work ever written about the Holocaust” and possibly his best work.