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Michael Bublé Joins Christian Guardino For Uplifting ‘Smile’ Performance In ‘American Idol’ Finale

Christian Guardino Impresses ‘American Idol’ Judges With His ‘Best Performance Yet’ As He Belts Out ‘The Lion King’ Classic

‘American Idol’: Christian Guardino Has Katy Perry In Tears With Emotional Cover Of John Lennon’s ‘Imagine’

Christian Guardino Is ‘On Fire’ In Show-Stopping ‘Idol’ Performance, Advances To Top 24 

‘American Idol’: Canadian Singer Nicolina Bozzo Duets With Christian Guardino On ‘The Prayer’

‘AGT’ Alum Yoli Mayor Makes A Musical Comeback During Her ‘American Idol’ Audition, Sings An Original Song 

Christian Guardino Has The ‘American Idol’ Judges On Their Feet After Jaw-Dropping Performance