Music has always been a prime ingredient in the strange and potent blend that is Weeds. The script for the pilot opened with the complete lyrics to Malvina Reynolds folk anthem Little Boxes -- from there, songs have served as counterpoint, punctuation, atmosphere, comic relief and, every once in a while, scene-stealer.Season four was a turning point for the show and the music. With Nancy and crew fleeing Agrestic and setting up operations in the Mexican border town of Renmar, change was in the air. Little Boxes is gone as a theme and cover song project and the show began sampling cross-border flavors and a few darker more menacing sounds.What s remained is the intense and at times insane obsession with finding the perfect song for a particular moment. The creators of Weeds always seek out new and unfamiliar bands, dig through the slush piles of emerging talent and otherwise look for artists who are willing to play along for the exposure and the love of the show.