J Álvarez, a Puerto Rico-born Dominican with a smooth voice and a passion for sunglasses, didn't break until his late 20s. His El Dueño del Sistema mixtape primed the pump, but Otro Nivel de Musica, the subsequent debut album, introduced him to the mainstream, incorporating leftfield electro flourishes without going full-on Daddy Yankee-style EDM. Since then, he's become one of the genre's most consistent artists. This is reggaetón you can listen to anywhere.