A 14-year-old blind singer with autism who delivered the national anthem at Fenway Park before the Cleveland Indians-Boston Red Sox game received a loud and long ovation from the players and fans.

Christopher Duffley, from Manchester, New Hampshire, was born prematurely and weighed only 1 pound, 12 ounces at birth. He was rendered blind due to Retinopathy of Prematurity, according to his website.

“And here to perform our National Anthem is a young fan who uses his musical talents to inspire people across the globe,” the announcer said in introducing Duffley.

Duffley paused before starting the anthem when the microphone didn't appear to be working. The crowd gave him encouragement and a loud ovation — as did the players from both dugouts — as he waved before starting.

When it was over, the ovation was even longer.

Duffley's first public performance was at Northwest Elementary School in Manchester, New Hampshire, when he was in first grade. Since then, he has sung at sporting events, including NASCAR in September 2011. This was at least his third performance at Fenway Park.

Learn more about Christopher on his website.

For more of Duffley's performances, see his YouTube channel.

Editor's Note: An earlier version of this story said that Duffley was 13 years old. He is 14, according to his website.