Terciopelo translates to "velvet". It's a beautiful and somewhat luxurious word that isn't commonly found in everyday Spanish songs, making it stand out.
In "Si Nos Dejan," the lyrics paint a romantic picture of a couple creating a new world together. They sing, "Haremos con las nubes terciopelo" (We will make velvet with the clouds), which is a wonderfully poetic and imaginative way to describe building a soft, comfortable, and dreamlike haven for their love. This imagery makes the word particularly memorable and enticing.
"Si Nos Dejan" (If They Let Us) is built entirely around one conditional wish. Ximena Sariñana and Jay de la Cueva keep picturing a whole life together, one line at a time, as long as nothing gets in the way: "Nos vamos a querer toda la vida" ("We're going to love each other for our whole lives"), "Buscamos un rincón cerca del cielo" ("We'll look for a corner close to heaven"). It's less a plan than a daydream, repeated until it sounds like a promise, and every verse closes on the same line, "Será lo que soñamos" ("It will be what we dreamed"), as if saying it enough times might be what finally lets it happen.