Mudez translates to 'muteness' or 'speechlessness'. It's a beautifully poetic word that you don't often hear in songs, describing the state of being completely unable to speak.
In this track, Rauw Alejandro sings, "Yo te llamo y me quedo en mudez" (I call you and I'm left speechless). He uses this powerful word to capture the feeling of being so overwhelmed by emotion that he can't find the words, perfectly expressing the song's theme of unspoken feelings and romantic frustration.
Ever been in a situation where you and someone else clearly like each other, but you're both pretending you don't? That's exactly what Rauw Alejandro and the king of bachata, Romeo Santos, are singing about in "Khé?". The song is a back-and-forth of mixed signals and frustration. Rauw admits he says the opposite of what he means, like when he tells her, "Te dije que no te amaba, y, lo arruiné" (I told you I didn't love you, and I ruined it), knowing full well he just wanted to kiss her.
They're caught in a game where nobody wants to admit their true feelings. He asks the big question: "Si no somos nada, ¿entonces a qué estamos jugando?" (If we're nothing, then what are we playing at?). He sees right through her act, pointing out that pretending she's better off without him is "te está matando" (killing you). It's all about that confusing space between friendship and something more, where pride gets in the way of what both people really want.