The two movie soundtrack albums that dominated the US album charts in the 1970s
The soundtracks to *Saturday Night Fever* and *Grease* were among the biggest-selling albums in the United States during the 1970s, with John Travolta serving as the link between both blockbuster films and their chart-topping accompanying records. The success highlights how film soundtracks and musical theatre, often overlooked compared to rock acts of the era, played…