The pen of salsa royal Rubén Blades is motivated by societal indignation, and there's enough of it to make a deep and dense catalog. An immigrant endlessly searches for paradise in the poignant, piano-laced “Buscando América,” and the howling, syncopated “Paula C” conjures heartfelt imagery of a lost runaway. He uses his passionate voice to narrate the spirit of the developing world on the conga-driven “Patria.”