Diana Ross & The Supremes are the most successful American vocal group of the entire rock era. With Ross, the group topped the charts 14 times. They effectively broke down the barriers present for African American entertainers before them and made it possible for cross over success on the grandest scale. The original trio, Ross, Mary Wilson, and Florence Ballard, had broken up in 1967 when Ballard was dismissed from the act, and Diana Ross & The Supremes evolved with new member Cindy Birdsong.
In December 1969, just a month before Diana would leave the group for a solo career, they made the last of twenty appearances on The Ed Sullivan Show with Ross. Performing a medley of their biggest hits, they finished the set with Someday We'll Be Together, their last single release with Diana and the last #1 hit on the 1960's. Just a month later, they would perform their final show together at the Frontier Hotel in Las Vegas. Thereafter Ross went on to solo stardom while Wilson and Birdsong regrouped with Jean Terrell as The Supremes for the 70's.
This You Tube clip is from that final Diana Ross & The Supremes appearance on The Ed Sullivan Show. It's a bittersweet delight, as even the girls themselves seemed nostalgic as they performed.