Negra y Azul was written for Breaking Bad and performed in the cold open of the season two episode Negro y Azul in 2009. The fictional band Los Cuates de Sinaloa narrates Heisenberg's rise in the style of real narcocorridos that chronicle cartel figures. Clips of the chorus later spread on meme soundboards and fan edits, where the Spanish ballad became shorthand for Walter White's growing legend and any dramatic, outlaw-style introduction online.