The theme song was sung by Maurizio Cerantola, who was the lead singer of the one hit Italian Heavy Metal/Hard Rock band Shout.
Maurizio Cerantola (The Singer of the main theme song) later sang for his friend, producer & former manager Al Festa's After Death (1989) Zombie Horror movie soundtrack, then he later joined the Italian Led Zeppelin tribute band, Custard Pie as the lead singer from 1993 till 1997. Then in 2006, he started singing in an Italian Whitesnake tribute band called Cover-Dale. Two years later, the band split up. Then he sang with Snake's Shadow, another Italian Tribute Rock band to Whitesnake.
Then after his departure from Snake's Shadow in 2019, he nowadays sings with his new Heavy Metal/Hard Rock band Pantheøn.
The late Romano Puppo happens to be the only character actor & stuntman from The Good, the Bad and the Ugly (1966) to appear in this movie.