One of the greatest disco songs of the 1970s was the track 'Baby Come On,' from the soundtrack to a 'mondo' style documentary, Sex O'Clock USA, released in 1976 by a French director named François Reichenbach.
According to TV Guide,
This French documentary is a valuable window into the so-called Sexual Revolution as it manifested in the U.S. during the pre-AIDS era of the mid-1970s. Drag queens, sex-slave auctions, prostitutes, and sex-workers all have their time before the cameras. Particularly interesting is a discussion held with a male live-sex-show performer in the company of his wife. A few explicitly hardcore moments are shown, and there are numerous simulated sexual encounters in Sex O'Clock, USA.
Porn stars Marc Stevens and John Holmes appear in the 90-minute film.
The soundtrack to Sex O'Clock USA was composed by Mort Shuman.
You can listen to 'Baby Come On' here. I defy anyone not to move when that bass groove kicks in..........
The entire soundtrack to the film is available here.
(I can't find a stream for the film, save for some sites that look really, really sketchy. If I find a legit stream I'll update this post accordingly.)