When the Malaga-based duo My State unleashed "Its Whatever", I half-expected my speakers to start smoking—or at least demand an apology for the sudden surge in voltage. It is rare to hear a track that captures the precise auditory frequency of snapping a pencil in half out of sheer frustration, but here we are. This isn't polite radio fodder. It is high-octane pop-rock that forgot...

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...