Vipera Sapiens is an EP by Brazilian heavy metal band Viper. It was released under the name Viper Brazil. Track listing "Acid Heart" — 3:16 "Silent Enemy" — 3:58 "Crime" — 4:06 "Wasted Again" — 3:21 "Killing World" — 3:08 "The Spreading Soul (acoustic version)" — 4:50 Personnel Pit Passarell - vocals, bass guitar Yves Passarell - guitars Felipe Machado - guitars Renato Graccia - drums Additional musicians: Sascha Paeth - backing vocal Thomas Rettke - backing vocal External links Viper official site Vipera Sapiens lyrics 1992 EPs Viper (band) albums Massacre Records EPs Albums produced by Charlie Bauerfeind