'Endless Love': - Diana Ross and Lionel Richie -Considered one of the best duets of all time, 'Endless Love' became the hit for either artist and spent nine weeks at the top of the charts.
'I Knew You Were Waiting (For Me)': - Aretha Franklin and George Michael -Considered an unlikely collaboration at the time, the 1987 up-tempo duet spent two weeks at the top of the Hot 100 chart.
The Time of My Life': - Bill Medley and Jennifer Warnes -We will never forget the lyrics toed to the 1987 film 'Dirty Dancing.' The soft-rock hit won the 1988 Academy Award for Best Original Song.
'Say Say Say': - Paul McCartney and Michael Jackson -The super duo’s hit spent six weeks at the top of the Billboard Hot 100 and was their second collaboration.
'No More Tears (Enough Is Enough)': - Barbra Streisand and Donna Summer -There's nothing like two of the biggest divas declaring that "enough is enough."
'Hold Me Closer': - Britney Spears and Sir Elton John -After rumors swirled about the "song of the summer" coming soon, Britney Spears and Elton John have confirmed their collaboration single.
'Under Pressure': - Queen and David Bowie -In 1981, Queen invited David Bowie to sing backup vocals on their new song 'Cool Cat.'
'My Boo': - Usher and Alicia Keys -The R&B superstars collaborated on the 2004 love anthem that became a major success.
'Ebony and Ivory': - Paul McCartney and Stevie Wonder -Recorded for Paul McCartney’s 'Tug of War' album, the duet is the longest.
'Don’t Go Breaking My Heart': - Elton John and Kiki Dee -This classic duet from 1976 with Elton John and Kiki Dee is an all-time favorite.