United Kingdom, Aug. 14 -- Tom Sandoval took Simon Cowell's criticism "to heart" on America's Got Talent.

The reality TV star and his band, Tom Sandoval and The Most Extras, appear on the 20th season of the talent show, and Tom has admitted to feeling stung by Simon's criticism of his performance of Take On Me by a-ha.

Tom told TODAY: "I could always be improving."

Tom's performance actually received glowing feedback from all of the other judges, except Simon.

The music mogul said at the time: "For me, the vocals weren't great, Tom. I'm going to be honest with you.

"However, not everyone comes on this show to get a record deal. Sometimes, it's about being true to who you are."

Despite this, Tom still loves singing Take On Me .

He e...