Frustrada means "frustrated" or "unsuccessful." It's a strong emotional word that immediately conveys a sense of disappointment and struggle.
In the song, the lyric "Mais uma tentativa frustrada" (Yet another frustrated attempt) sets the tone for the singer's emotional state. It highlights his repeated failures in moving on from a past relationship, making it a key word for understanding the song's theme of heartbreak and longing.
"Dois Lados" ("Two Sides") is about the uneven aftermath of a breakup. The singer comes home at five in the morning after another failed attempt to move on, admitting that drinking and kissing someone else didn't fix anything.
The title captures the song's central idea: every breakup has two sides. On one side is the singer, who drinks, suffers, cries and keeps calling. On the other side is the ex, who has simply moved on and is following their own life with someone new.
By the end, the singer stops describing the split in the abstract and owns it directly: "I'm the one who drinks, who suffers, who cries and who calls" — a plain admission of which side of the story is really theirs.