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
Diana Ross was to publicly introduce a new Motown recording act. Though she herself did not claim their discovery, Motown's publicity department credited Ross with having discovered the Jackson 5. Ross would introduce the group during several public events, including "The Hollywood Palace". In November, Ross confirmed a split from the Supremes in "Billboard". Ross' presumed first solo recording, "Someday We'll Be Together", was eventually released as a Supremes recording and became the group's final number-one hit on the Hot 100. It was also the final number-one "Billboard" Hot 100 single of the 1960s. Ross made her final appearance with the Supremes