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
Someday We'll Be Together background throughout the song. When Berry Gordy heard the completed song, he decided to release it as the final Diana Ross & the Supremes song. Neither of the Supremes' remaining members, however, sang on the record. Ross's first solo single instead, released in early 1970, became "Reach Out and Touch (Somebody's Hand)." Even though the implicit subject of the song was that of Ross comforting a long-distance lover, "Someday We'll Be Together" allowed for other interpretations, one being that Ross and bandmates Mary Wilson and Cindy Birdsong would one day nostalgically "be together" again. Further, in concert, Ross would suggest