Singer Justin Timberlake invited the 25,000 fans who attended his San Jose, Calif. concert to help him sing “Happy Birthday” to another young fan in the crowd, reports ABC News.

Timberlake, 33, stopped his concert earlier this week when it was brought to his attention that one of his fans, an 8-year-old boy with high-functioning autism, was celebrating his birthday at the show.

“…Before we knew what was happening, the group in front of us that had turned out to be so incredibly kind all night to our birthday boy, and these gorgeous girls who I was convinced would be totally annoyed by Julian, had captured Justin’s attention,” said the young boy’s mother, in an article for Huffington Post.

Once it was brought to the “SexyBack” singer’s attention, Timberlake conversed with the boy confirming his age.

“Eight years old?” asked Timberlake. “Sorry about the profanity, Mom,” he said, jokingly apologizing to the boy’s mother for curse words that had occurred during his performance.

“And then it happened,” recalled the mother. “Justin Timberlake was singing ‘Happy Birthday.’ They all were.”

“Thank you Justin Timberlake and the ‘Sexy Ladies’ sitting all around us. Thank you Tennessee Kids and the people all the way in the back,” continued the mother. “Thank you to the thousand people who stopped to wish Julian a personal Happy Birthday on the way out.”

“Thank you JT (Justin Timberlake) for an incredible night!! This is a moment Julian will never forget!” remarked the boy’s father later on Facebook.