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Alex Da Kid is an Emmy and Grammy-winning producer/songwriter, who was key in crafting Eminem f/Rihanna's "Love The Way You Lie," Imagine Dragons' "Radioactive" and myriad other hits. And now he's gone the solo artist route. His first single via KIDinaKORNER/RCA, which features X Ambassadors, Elle King and Wiz Khalifa, is "Not Easy." Learn more in our Vibe Raters roundup of buzzing acts poised to break, where he's the sole debut this week.