Quemazón literally translates to "burning sensation" or "blaze." It's an interesting word because it carries a strong, vivid image of intensity.
In the context of the song, "ando en la quemazón" is a slang expression that means being in the thick of the hustle, working hard, or being involved in intense activities to make money. It conveys the idea of being in a demanding and perhaps risky situation, highlighting the artist's journey from humble beginnings to success.
Calle 24's "SI ME VEN" is all about a guy who's been through a lot to get where he is, and he's not about to apologize for it. He's been hustling for a while, saying, "Ya tiene tiempo que ando en la quemazón" [I've been in the grind for a while now] and "Ya tiene tiempo que salí del cantón" [It's been a while since I left home]. He knows that to win, you have to lose, and he's not afraid of the game anymore. He's proud that the money he has is his own, earned through hard work, not given to him: "El billete que cargo es mío / Y sepan que nada fue regalado" [The money I carry is mine / And know that nothing was given away].
He's got his priorities straight, too. His mother's prayers keep him safe, even if her rosary is hidden: "Mientras mi madre me rece las cosas nunca me van a salir mal / Aunque el rosario vaya abajo de la camisa, me protege igual" [As long as my mother prays for me, things will never go wrong / Even if the rosary is under my shirt, it protects me just the same]. He's also pretty blunt about people who judge him, telling them to mind their own business: "¿Qué les importa mi vida? Enfóquense en la suya, a mí déjenme ser" [What does my life matter to you? Focus on yours, leave me alone]. He's not looking for anyone's understanding, just wants to do his own thing.