Marcella Araica has been helping pop and R&B stars reframe their sound since her days at Miami’s Hit Factory in the early 2000s. She assisted in ushering in a new, edgier Britney Spears with “Gimme More” and infused P!nk’s confessional ballad “Sober” with grunge energy. Other prestige collaborations include trunk-rattling club tracks for mentor Timbaland (“The Way I Are”) and Diddy’s Dirty Money project (“Hello Good Morning”).