Malgastar means 'to waste' or 'to squander'. It's a strong verb that conveys a sense of regret and futility, making it more impactful than a simpler word for 'waste'.
In the song, the singer asks, "¿De qué me sirve malgastar mi voz?" (What good is it for me to waste my voice?). This highlights his frustration and the realization that his efforts to call out to his lost love are in vain, adding a layer of emotional depth to the lyrics.
Ever had a breakup you just can't shake? That's the heart of this song. Morat and Danna Paola sing about that awful feeling when you know a relationship is over, but you can't stop thinking about it. The singer is haunted by memories, especially late at night. There's a constant battle in their head: "Una parte de mí no va a dejarlo entrar / Y la otra parte le abre la ventana" (One part of me won't let it in / And the other part opens the window for it). They're convinced they'll never find a love like this again, so what's the point in trying to forget?
The singer even admits the breakup was their fault, but knows begging is useless. They ask, "¿de qué me sirve malgastar mi voz / Si vas a perdonarme y no vas a volver?" (what's the use of wasting my voice / If you're going to forgive me but not come back?). While their friends tell them to be patient and test their ex with absence, the singer feels like this is a terrible game. Instead, they keep looking for what they've lost, feeling completely foolish, repeating, "Como un idiota sigo buscando" (Like an idiot, I keep searching).