"Kill! – about an Interpol agent on the take from international drug rings – has a (pardon the pun) killer score by Berto Pisano and Jaques Chaumont. The theme sticks in one's mind like an ice pick. Its stabbing rhythm, pounding congas, death ray electric guitar and stroboscopic orchestration are brilliantly executed. The score is rife with mysterious melodies, superb abstract orchestral cues, psycho beat, sitar exotica and a sexy whispered vocal performance by actress Jean Seberg. Kill! is a critical Italian soundtrack."
– from Chapter 2: Spy Symphonies of Kristopher Spencer’s Film and Television Scores, 1950-1979