The Supremes’ farewell performance with Diana as the lead singer at the Frontier Hotel in Las Vegas. Jean Terrell, her replacement, is introduced. The “new” Supremes score a top ten hit with their first effort, “Up the Ladder to the Roof.” Diana’s debut solo single released, “Reach Out and Touch (Somebody’s Hand),” only reaches #20 Pop, but is one of her most popular songs and concert favorite. Written and produced by Nickolas Ashford and Valerie Simpson. “Ain’t No Mountain High Enough” (a remake of Marvin Gaye & Tammi Terrell’s hit duet) is released on Diana, her first #1 as a solo artist, also written and produced by Ashford and Simpson “War” is released on Edwin Starr, written by Norman Whitfield and Barrett Strong, and becomes one of the most popular anti-war protest songs ever recorded. Smokey Robinson & the Miracles’ “Tears of a Clown” reaches #1 pop. With release of “I’ll Be There,” the Jackson 5 became the first group in the history of the Billboard Hot 100 to have their first four singles go to number one, all co-written and co-produced by Gordy.