Trocadero was made popular by making the soundtrack for Red Vs. Blue, an internet machinima comedy. Trocadero is a band based in Cambridge, Massachusetts that consists of Nico Audy-Rowland, Martha Williams, Jeff Williams and Brandon Erdos. Other guest musicians include Philadelphia Telepants, Sandy Casey, Susan Hsia, and Karen Langlie. They are most famous for creating the theme to the popular machinima series Red vs Blue, "Blood Gulch Blues," as well as other music for the series such as "A Girl Named Tex".