KNOW-IT-ALL (LP)The teenage wallflower anthem "Here," Alessia Cara's debut for Def Jam, was released in May 2015 and sounded nothing like the hits such as the Weeknd's "Earned It," Omarion's "Post to Be," and Rihanna's "B**** Better Have My Money" that were at or around the top of Billboard's R&B chart. Even with instant recognition of the Isaac Hayes sample that drives it, "Here" sounded distinct, not only because its tracing of social anxieties was so palpable, but