Complex sentence: The album was recorded during the final night of the group's engagement at the Frontier Hotel in Las Vegas, Nevada on January 14 1970; the show was Diana Ross' final performance with Supremes Mary Wilson and Cindy Birdsong.
Split into simpler sentences: The album was recorded over the course of the group's final engagement together at the Frontier Hotel in Las Vegas, Nevada, including the final night on January 14 1970. The show marked Diana Ross' final performance with Supremes Mary Wilson and Cindy Birdsong.