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...

Alli Brown's "Undeniable"… Hmm, where to even begin with this kaleidoscope of sound from Salt Lake City? It's like someone took the earnestness of a diary entry, crumpled it up, threw it at a dartboard of genres – pop, folk, country, rock – and then decided to set the whole thing to music. Did the dartboard land on "genius" or "glorious mess"? I'm still...