One of the many fantasy references that Michele Salvemini (alias Caparezza _ a very famous italian rapper) use to call himself in his lyrics.
This therm can be heard in the song "Avrai Ragione Tu", created by Caparezza, at the very first seconds.
There is a veiled reference to "Casapound" (a neo-fascist and populist italian political party _ active nowadays).
"Capasound, con la rabbia che c'è nell'aria è tipo - Hey io ho la maglia di Che Guevara e vado a Casa Pound - ".