Metralla literally translates to "shrapnel", the metal fragments from an exploding bomb. It's a very intense and unusual word to find in a romantic song!
Juanes uses it in the powerful metaphor, "Me siento indestructible como un cañón de metralla" (I feel indestructible like a shrapnel cannon). He uses this extreme, military-grade imagery to express just how incredibly strong and invincible his partner's love makes him feel. This unexpected word choice makes the feeling he's describing truly unforgettable.
“No Siento Penas” is Juanes’s joyful confession that true love can wipe out every trace of doubt, pain, or sadness. Each time his partner whispers te amo, he feels as warm as the morning sun, as powerful as a raging hurricane, and as unbreakable as solid steel. The Colombian singer uses these vivid images to show how completely love transforms him: worries disappear, headaches vanish, and only a bright, unstoppable energy remains.
In short, the song is a celebration of invincibility through affection. From the very day he met his beloved, Juanes has lived in a world where there is no sorrow, no confusion, no loneliness – only love, and all of it is devoted to that special person. The track invites listeners to remember their own moments of soaring happiness and to believe that, with the right person, life can feel endlessly powerful and beautifully simple.