Christian Guardino Christian Guardino is an 18 year old “America’s Got Talent” Semi-finalist. He was Howie Mandel’s 2017 Golden Buzzer winner. Christian hails from Long Island, NY. He was featured on FOX’s “Showtime at The Apollo” with host Steve Harvey. One of his highlights is performing a duet Jordin Sparks at Michelle Obama’s Partnership for a Healthier America’s gala in 2016.