sentences:  It was also released at the height of the band's international fame and success; because of this popularity the single has been included in the band's various "Greatest Hits" compilation albums.Although the Human League have never recorded their own version, due to the song's popularity the band frequently play their own version when they perform live, often as an encore.The Human League version differs considerably from the Giorgio Moroder produced original in that it has a longer, more dramatic intro and female backing vocals by Susan Ann Sulley and Joanne Catherall, which are as prominent as Oakey's lead.