Andrea Bocelli opened up about the terrifying health condition he suffered from that led him to cancel his U.S. shows.

The famed Italian singer sparked concerns when he abruptly canceled his scheduled show in Boston in December. He told the fans he did everything he could do to complete the night, but he was not able to do so.

After rescheduling the dates, Bocelli shared a new health update and revealed what affected his voice.

What Happened to Andrea Bocelli?

On Instagram, Bocelli expressed his gratitude to everyone who supported and understood his state when he failed to complete his shows. He added that a "devious virus" took away his voice.

"This is something that has never happened to me in my 30 year career," he continued. "Therefore, as you well know by now, I had to cancel and reschedule four out of the eleven planned concerts. And you cannot imagine with what sorrow I was forced to do so!"

Bocelli told his fans he tried to recover as quickly as possible. However, the undisclosed virus reportedly challenged him while he performed in some shows.

After getting the rest he needed, Bocelli confirmed that his voice finally returned and "regained its vivacity and all its freedom."

He ended his post by greeting everyone with a Happy New Year.

Bocelli's 11-year-old daughter, Virginia, wowed the crowd at his Philadelphia, Penn., show when she sang on her father's behalf amid the vocal problems.

READ ALSO: Andrea Bocelli Makes Royals, Fans Emotional With THIS Song at Platinum Jubilee

Andrea Bocelli Reveals New Schedules of His Postponed Shows

On his Facebook page, Bocelli shared the new dates of his Winter Tour.

He will hold his concert in Baltimore on February 20, while he will meet his fans in Philadelphia and Hartford, Conn., on February 21 and February 23, respectively.

Bocelli did not have notable illnesses over the past few decades, though he successfully became one of the greatest musicians in the world despite his blindness.

"When I was five my mother discovered that the only way to comfort me with my glaucoma, was to play classical music on the record player," he said in his interviews, per Classic FM.

His doctors saved 10 percent of the sign in his one eye, but he completely lost it after suffering a brain hemorrhage following a soccer accident. His right eye, the only one he could see light and color with, was hit violently with a ball.

READ MORE: 'Because I Believe': What To Know About Andrea Bocelli's Documentary

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