Someday We'll Be Together with Diana Ross singing lead on the 1960s decennial finale of "The Ed Sullivan Show" that aired live Sunday, December 21, 1969 on CBS. "Someday We'll Be Together" was the final number at Diana Ross & the Supremes' farewell concert on January 14, 1970 at the Frontier Hotel in Las Vegas. After the completion of the show, Jean Terrell was presented onstage to the audience as Diana Ross' replacement (alongside Wilson and Birdsong). Thus "Diana Ross & the Supremes" officially split apart, becoming "Diana Ross" (the solo act) and "The Supremes" (the group). Ross reunited with Wilson and Birdsong in
The Supremes to the Flamingo Hotel in Las Vegas billed as "the Supremes with Diana Ross", the first time in which Ross was billed separately from the group. One month later, Gordy renamed the group "Diana Ross & the Supremes," putting Ross's name ahead of the group. The first two days of the Flamingo engagement went by smoothly. On July 1, when reporting for makeup and wardrobe before their first show of the evening, Ballard discovered an extra set of gowns and costumes that had been brought along for Cindy Birdsong. Angered, Ballard performed the first concert of the night inebriated, leading