Watch Christian Guardino Sing John Lennon's 'Imagine' on 'American Idol' and Bring Katy Perry to Tears
American Idolcontestant Christian Guardino left judgeKaty Perryteary-eyed with his powerful performance of aJohn Lennonclassic. On Sunday’s episode of the iconic singing competition series, the 22-year-old aspiring musician delivered a soulful take on the late former Beatles member’s signature 1971 hit “Imagine,” garnering emotional responses from all three judges — specifically Perry, 37, who was reaching for tissues midway through the performance. Throughout his performance, Perry was seen dabbing tears away from her eyes with tissues before getting out of her chair with fellow judgesLionel RichieandLuke Bryanat the end to give Guardino a standing ovation....