Nicola Di Bari is hospitalized in intensive care at the San Raffaele Hospital in Milan.
The news is given by his manager, Franco Mariello.
The conditions of the Apulian singer-songwriter have worsened in the last few hours following a coronary surgery, which he had undergone three days ago.
Di Bari, twice winner of the Sanremo Festival and author of pieces that have entered the history of Italian pop music such as Chitarra suona più piano or La prima cosa bella, turned 80 on 29 September last.