When L.A. deejay Mark Ronson played the Righteous Brothers tune “You’ve Lost That Lovin’ Feeling” during the reception for the couple’s wedding, Cruise serenaded his bride by singing along with the record.

“She was completely touched — laughing, loving him and enjoying him,” guest Leah Remini tells PEOPLE.

Cruise’s impromptu serenade, of course, hearkens back to his performance of the same song in Top Gun. In the movie his character, Maverick, attempted to woo Kelly McGillis with the song. As for Katie, her heart already belongs to Tom.