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...

Ava Valianti represents something increasingly rare in contemporary music: genuine precocity without artifice. This Massachusetts artist, who is only fifteen years old, handles general themes with a level of emotional depth that is shocking. She shows that youth can bring out the best in complicated human experiences, rather than hiding them. "Distant," her sixth single, functions as a sonic archaeology of friendship's dissolution. The track excavates layers...