Katy Perry, Luke Bryan and Lionel Richie all rushed the stage after Kayko stunned them with his rock version of Goyte’s hit song Somebody That I Used to Know on Monday’s episode of American Idol.

Kayko, 23, a songwriter and producer from Fort Lauderdale, Florida, closed out the show rocking out to and jumping across the stage while he sang during the Billboard #1 Hits episode that featured performances by the Top 12.

Meghan Trainor, the show’s Mega Mentor, was impressed with Kayko in rehearsals and said she felt like he was her best friend.

‘Meghan Trainor, if you are watching, stay back,’ Katy said. ‘He’s my best friend!’

Katy Perry rushed the stage followed by her fellow judges  after Kayko stunned them with his version of Goyte’s hit song Somebody That I Used to Know on Monday’s episode of American Idol

‘So you liked it,’ said host Ryan Seacrest, 49.