Derretido means "melted" or "thawed". It's a vivid and evocative word that paints a clear picture of transformation.
In "Física o Química", the lyric "Y un corazón de hielo herido se ha derretido en su colchón" (And a wounded heart of ice has melted on his mattress) uses derretido to symbolize a profound emotional change. It suggests that a once cold and hurt heart has softened and opened up, likely due to a new connection or intense emotion, making it a powerful metaphor for vulnerability and healing.
“Física o Química” is the ultimate soundtrack to a whirlwind crush. The singer bounces between confidence and doubt, bragging about doing “everything I can so we’re together,” then instantly admitting that jealousy hits like a cannon when he sees his love interest with someone else. This back-and-forth mood captures the messy, electrifying chaos of young romance—part science experiment, part magic potion—where every stolen kiss feels like “alternative medicine” and even a “heart of ice” can melt right into the mattress.
At its core, the song asks a playful question: Is this attraction pure chemistry or unstoppable physics? Either way, the emotions are loud, unfiltered and impossible to ignore. Despistaos wraps these feelings in catchy rock guitars and sing-along hooks, inviting listeners to relive the rush of first love, complete with contradictions, impulsive choices and the unstoppable force that pulls two people together.