This week, we feature superstar duets: songs in which two established solo performers or groups team up to produce one unforgettable record. I'm giving you the song title and the year; you tell me which two performers sang on the record.

1. "Somethin' Stupid" (1967)
2. "I'm Gonna Make You Love Me" (1969)
3. "Then Came You" (1974)
4. "You Don't Bring Me Flowers" (1978)
5. "Guilty" (1980)
6. "Xanadu" (1980)
7. "Ebony and Ivory" (1982)
8. "The Girl Is Mine" (1982)
9. "Islands In The Stream" (1983)
10. "The Next Time I Fall" (1986)
11. "After All" (1989)
12. "This Old Heart of Mine" (1990)
13. "Unforgettable" (1991)
14. "One Sweet Day" (1995)
15. "Scream" (1995)
16. "The Boy Is Mine" (1998)
17. "All I Have" (2002)

Bonus: "Reason To Believe" (1993) and "Having A Party" (1994)

Super Bonus: "Jingle Bell Rock" (1961)