Despite Morgan's assessment, the pair was considered the best act Wednesday. Morgan tried to explain his comments, saying the boy, who played harmonica, outshone his 20-year-old brother who sang and played guitar, Us Weekly reported.
"Yeah, I thought he was a genius, the boy ... he was a great harmonica player," judge Piers Morgan told Us. "He rocked."
The guitar player knows the truth, Morgan reckoned. The younger, more-talented musician just needs a back-up band.
Morgan told Us he has no remorse for his harsh judgments because "America's Got Talent" is a million-dollar competition and everyone understands how difficult the judging is.
"I also don't think he was crying because of what I said, I think he was crying because part of him knows that I was right," said Morgan. "But we're not here to say (to) these kids 'Just because you're young, we can't be honest with you.'"