The Supremes performing on "The Ed Sullivan Show" on December 21, 1969. The Supremes without Ross made their final appearance altogether on "Ed Sullivan" on February 15, 1970. Diana Ross & the Supremes gave their final performance on January 14, 1970 at the Frontier Hotel in Las Vegas. At the final performance, the replacement for Diana Ross, Jean Terrell, was introduced. According to Mary Wilson, after this performance, Berry Gordy wanted to replace Terrell with Syreeta Wright. Wilson refused, leading to Gordy stating that he was washing his hands of the group thereafter. This claim is also made by Mark Ribowsky. After
Diana Ross & the Supremes Join The Temptations as a duet with Tammi Terrell, "Ain't No Mountain High Enough". "This Guy's in Love with You" was a hit for both Dionne Warwick and Herb Alpert & the Tijuana Brass, while "Funky Broadway" had been recorded as a hit for Dyke & the Blazers and Wilson Pickett. The Sweet Inspirations' signature song, "Sweet Inspiration", is also covered here, as is Stevie Wonder's "A Place in the Sun", The Four Tops' "Then", and the show tune "The Impossible Dream" from "Man of La Mancha". Frank Wilson served as executive producer of the project. "Diana Ross & the Supremes Join the