Accompanied by his owner, who was identified only as Pam, 3-year-old Oscar performed Pachelbel’s “Canon in D Major.”
Before they started, Pam told Cowell: “He can sing. He can hold a note. He can even do a vibrato.”
She said her dog started singing about a year and a half ago when she was playing the piano at home.
Cowell said: “I’m not kidding. I’ve done this show a long time and I always said if we could find a dog that could sing, that would be everything to me.”
As Oscar sang onstage, Tyra Banks marveled from backstage, “He’s on key!”
The performance got a standing ovation from Cowell, but he didn’t go completely soft.
“I think your piano playing isn’t great, by the way,” he said to Pam. “I think it could use a little practice, but we may have found our first singing dog. Genuinely. This is exciting.”
Check out the video of Oscar’s performance above.