May 29, 1976 - Diana Ross started a two week run No.1 on the US singles chart with 'Love Hangover', her fourth US No.1, it made No.10 in the UK.
The song was written by Pamela Sawyer and Marilyn McLeod as a disco number. Producer Hal Davis recorded the track in 1975 thinking it ideal for Marvin Gaye or Diana Ross. They were his two favorite vocalists to work with and thought Diana would be sexier on it, so he cut it on her. The Motown staff believed that it would be perfect for Ross to record, too. Ross, like her soul contemporaries Aretha Franklin and Marvin Gaye, initially resented the new musical movement but eventually agreed to record the song.
Hal Davis instructed the song's engineer Russ Terrana to install a strobe light so that Ross could be in the "disco" mindset. As the song changed from ballad to uptempo, Ross became more comfortable with the material; she hummed, sang bit parts, laughed, danced around and even imitated Billie Holiday. The carefree and sensual nature of Ross' vocals and the music's direction helped to sell the song.
The song was released on the Diana Ross LP in February, 1976. The lead single from the album was "I Thought It Took A Little Time." The 5th Dimension released "Love Hangover" as a single. Motown then issued Ross' version on 45. Both versions entered the chart the same day. By the time Ross' version of "Love Hangover" went to number one, Ross had reinvented herself as a disco diva and The 5th Dimension's version had peaked at number 80. It won Ross a Grammy nomination for Best R&B Female Vocal Performance.