Ultan’s single, "The Tempest," erupts not so much into the room as it does through the floorboards, dragging with it the scent of wet wool and imminent confrontation. This Dublin solo musician, a cartographer of past agonies, presents an energetic rock piece that feels less like a song about history and more like a fragment of it, throbbing and urgent. The main riff careers...

From the sun-kissed lanes of Athens emerges Mama Blue, a songstress whose voice seems to harness the very essence of nightfall. Her voice, a sultry echo reminiscent of Twilight's embrace, is on full, mesmerizing display in her latest single, "Mother of the Night." Few songs possess the power to transport, to ensnare; this is one of them. While many young artists seek the latest trends, Mama...