Tranza is an informal Spanish term for a 'deal' or 'shady business', often implying something illicit or underhanded happening behind the scenes.
In the context of the song, the line "Tranza no es de la gente tranquila que" ("Tranza is not one of the calm people who") uses the word to set a tone of danger and street-smart dealings, hinting at a world where trust is scarce.
Tito Torbellino Jr.'s "Dos Celulares" drops us right into a story of clandestine dealings and a journey across borders. The lyrics set the scene with people choosing a specific hour for a "tranza" [deal], clearly not the quiet type, as they "no comparte las armas" [don't share weapons].
The song then describes someone with "dos celulares" [two cell phones] for these times, enjoying a beer with a hidden baggie – a "buena vitamina" [good vitamin] that keeps them awake. They head up to the rose bushes and down to the city. A couple of days later, at 2 AM, a call comes in: she's in Tijuana, sleeping in an old room with lots of pillows. The next day, another call confirms they've crossed the border, and another call for the morning promises they'll advance. It's a quick, vivid glimpse into a life on the move, full of hushed calls and border crossings.