Vicisitud translates to "vicissitude," meaning a change of circumstances or fortune, typically unwelcome or unpleasant. It's a sophisticated and less common word that adds a poetic depth to the lyrics.
In the song, the line "Soy el baile de la vicisitud" (I am the dance of vicissitude) suggests the artist sees himself as constantly navigating and embodying life's unpredictable ups and downs. This personification of change makes the word particularly striking and memorable.
"Recordé" opens in Portuguese rather than Spanish, on a chant borrowed from Afro-Brazilian tradition: "Malunguinho é rei / É o rei da mata" [Malunguinho is king / He's the king of the forest]. It runs for twenty seconds before Milo J says a word. When he does come in, it is with a memory he cannot use: "Hoy recordé la melodía que sonaba cuando sonreía" [Today I remembered the melody that played back when I used to smile]. He can hear it. He cannot get back to it. "Y aunque si quiero volver, el tiempo me gana otra vez" [And even if I want to go back, time beats me again] is that whole problem in one line.
Then he names the thing that actually frightens him, with no decoration at all: "Tengo miedo de la oscuridad / Porque soy otra piedra en la arena / Que algún día desaparecerá" [I'm afraid of the dark / Because I'm another stone in the sand / That one day will disappear]. The second half turns the question inward. "¿Seré una buena persona / O un condenado a vivir en un bucle" [Will I be a good person, or someone condemned to live in a loop]. He never answers it. What he repeats at the close instead is "Ya es pasado, aunque duela" [It's in the past now, even though it hurts], and he says it enough times that you start to hear him trying to convince himself.