Teen sensation Alondra Santos performs La Copa de la Vida in the AGT semifinals.\r
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3 Shades of Blue, Daniella Mass, Alondra Santos and Piff the Magic Dragon Here are their performances: 3 Shades of Blue .\r
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Golden Buzzer performer Sharon Irving thrills the crowd with her take on Imagine.\r
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One-of-a-kind magician Piff the Magic Dragon takes his shot at the AGT finals.