From Broken Shoes to the fans' anthem, that music derives from other contents. “We will return, we will return…” has been sung since then in the Peronist mobilizations, but this is also how the songs of the radicals began.
The music of Los Auténticos Decadentes, La Mosca or Calamaro (“For the rest”) became a fan song, the same as a romantic song from half a century ago.