The fiercely independent, Idaho-raised rapper nick! channels a deeply overstimulated, restless frequency on his new EP, "GEEKED!". Born in 2006 and building a fervent following entirely without industry co-signs, he occupies an interesting lane in new-wave underground hip-hop. His music sounds precisely like the brain chemistry of an internet-raised creative processing the blinding speed of newfound success. He writes and produces melodic, hard-hitting rap...

HollyBear does not sound heartbroken on "OBVIOUS". She sounds like she already checked the receipts, closed the app, fixed her hair, and decided the lesson was expensive but useful. That is the fun of the single. It has the warmth of R&B, the cool posture of jazz influence, and the tiny side-eye of someone who knows exactly what happened. "OBVIOUS" moves with a smile that...