Last week, we spotlighted superstar duets. This week, we look at another sort of duet, in which one big star teams up with someone else who barely made a dent in the charts or in our consciousness - except with this song. I will give you the name of the song, and the not-famous duet partner; you tell me who the superstar was.

1. "It Takes Two," Kim Weston (1967)
2. "You're Having My Baby," Odia Coates (1974)
3. "Don't Go Breaking My Heart," Kiki Dee (1976)
4. "Heaven Knows," Brooklyn Dreams (1978)
5. "Stumblin' In," Chris Norman (1979)
6. "Yes I'm Ready," Teri DeSario (1980)
7. "With You I'm Born Again," Syreeta (1980)
8. "Should've Never Let You Go," Dara Sedaka (1980)
9. "Separate Lives," Marilyn Martin (1986)
10. "I Just Can't Stop Loving You," Siedah Garrett (1987)
11. "Kiss," The Art of Noise (1989)
12. "Heaven Help Me," Deon Estus (1989)
13. "Close My Eyes Forever," Lita Ford (1989)
14. "Set the Night to Music," Maxi Priest (1991)
15. "When I Fall In Love," Clive Griffin (1993)
16. "Hard To Say I'm Sorry," Az Yet (1997)
17. "Be Careful," Sparkle (1998)

Bonus: "My Bonnie (My Bonnie Lies Over the Ocean)," Tony Sheridan (1964)