'That is the first time he's told me something like that throughout the whole competition,' singer says.
Plus: Puerto Rican singer gets an 'amazing' shout-out from Jennifer Lopez and Marc Anthony.
Hip-hop photographer recalls persuading rock-star duo and film mogul Harvey Weinstein to flash the Roc diamond, in Mixtape Daily.
'We have the power to make a real difference here,' Mabel Gonzalez Nunez, Change Agent Facilitator at Boston's Youth Lead the Change program, tells MTV News.
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Kanye West and Kelly Clarkson also performed on the show.
Von Smith, Anoop Desai, Tatiana Del Toro included in wild-card round.
Alondra Luna Nuñez is back with her family in Mexico after being forcibly deported to the U.S.