Alien 2: On Earth, also known as Alien Terror, is a 1980 science fiction horror film, written and directed by Ciro Ippolito before the trademark Alien was registered. It was released following the success of the 1979 film Alien as an unofficial sequel, albeit having little connection to the film.

Guido and Maurizio De Angelis, also known as Oliver Onions, are a prolific duo of Italian musicians, multi-instrumentalists, composers and singers, as well as television and film producers. They reached the height of their popularity in the 1970s and early 1980s both as composers and as performers, mainly thanks to their scoring and theme song composing and performing for action/comedy films starring the popular duo of Bud Spencer and Terence Hill, many of which became huge hits all across Europe, both cinematically and musically. After a period of retirement from the music business in the 1990s and early 2000s, during which they moved into television and film production through their own company, they had a musical comeback thanks to a one-off concert event in Budapest, Hungary, billed as Oliver Onions Reunion Live Budapest and organized by local promoter Gábor Kóves mainly because of the duo's popularity in his homeland, itself due to the fact that Spencer & Hill films were hugely popular in the country during the Communist regime - and, according to Maurizio De Angelis's commentary on the show, still are. The event, testified by the 2017 release of a double CD/DVD box set, led to a series of other successful shows in Italy and Europe in the following years.