Aguacero literally means "downpour" or "heavy rain shower". It's a much more intense and evocative word than the common lluvia (rain).
In this song, Ricky Martin uses it as a powerful metaphor. He sings, "Tu recuerdo sigue aquí, como un aguacero" (Your memory is still here, like a downpour), to describe how the memory of a past love suddenly and intensely overwhelms him. It perfectly captures that feeling of being completely drenched in nostalgia.
This song is a fantastic duet about a memory that just won't fade after a breakup. Ricky Martin kicks it off by describing this memory as a powerful storm: "Tu recuerdo sigue aquí / Como un aguacero" [Your memory is still here / Like a downpour]. But it's not just rain; it's a storm that "Quema y moja por igual" [Burns and soaks at the same time]. He's completely stuck, wondering if this constant reminder of his ex "me hace bien o me hace mal" [is good for me or bad for me]. He admits he was the one who left, but the memory stayed behind, sometimes feeling like a comfort and other times like it wants to kill him.
Then, Chambao gives her side of the story. She flips the script, singing "Que tú te fuiste, eso es pasado" [That you left, that's in the past], and agrees she needs to forget him. But she's not making it easy on herself! In a wonderfully dramatic move, she admits, "yo le puse una velita a todos mis santos... para que pienses mucho en mí" [I lit a candle to all my saints... so you'll think a lot about me]. They both know the memory is "antídoto y veneno al corazón" [antidote and poison for the heart], a feeling that's both healing and destructive.
Ricky Martin was turned down by Menudo twice for being too short. The third audition worked, and in 1984 Enrique Martín Morales joined the Puerto Rican boy band at twelve, staying past his age-mandated retirement until July 1989. Two solo ballad albums followed, Ricky Martin (1991) and Me Amarás (1993), before he changed direction.
A Medio Vivir (1995) carried "María", his first hit well beyond Latin America, and Vuelve (1998) carried "La Copa de la Vida", the official song of that year's World Cup in France. He sang it at the 1999 Grammy Awards, where Vuelve took Best Latin Pop Performance, and that spring "Livin' la Vida Loca" spent five weeks at number one on the Billboard Hot 100 as the lead single from his first English-language album. He has gone on recording in Spanish throughout: Almas del Silencio (2003), and A Quien Quiera Escuchar (2015), which won Best Latin Pop Album. He came out publicly in 2010, and his foundation campaigns against human trafficking.