Andrea Bocelli's stunning Easter performance leaves viewers in tears: 'The most beautiful thing I've ever seen'

Opera singer Andrea Bocelli left viewers in tears after his Music For Hope concert performance in Milan, Italy.

3.4 million viewers watched Bocelli perform live in the empty Duomo di Milano cathedral — which is currently closed to the public amid the coronavirus pandemic.

Bocelli was accompanied by Duomo di Milano's organist, Vianelli, while performing Schubert's 'Ave Maria' and 'Amazing Grace.'

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Kaley Cuoco got emotional after watching the live Easter performance, saying it was, "so amazing."

"It was the most beautiful thing I'd ever seen," Cuoco said tearfully in an Instagram Stories video.

The former Big Bang Theory star, 34, then added her fostered shelter dog, Dumpy, was sick during the performance.

"Dumpy then threw up on the couch during, and I got so upset because I wanted to watch the end and then Karl was able to get it back for me... Thankyou Andrea Bocelli for doing that," she said. "That was life-changing."

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Hugh Jackman also thanked Bocelli for his outstanding performance in an Instagram post.

"From the bottom of our hearts, thank you @andreabocelliofficial A tremendous gift and exactly what we needed," Jackman wrote on Instagram.