47. The 45 King "The 900 Number" (1987)
Producer: The 45 King
Album: The 900 Number EP
Label: Warner Bros., American Recordings
Respect due to Marva Whitney's "Unwind Yourself" from 1967, which provided the unstoppable horns that The 45 King flipped for his signature instrumental hit. He later recorded a version with Lakim Shabazz dropping vocals on it, before it was given a new lease of life thanks to DJ Kool's hit remake "Let Me Clear My Throat" in 1994. Yo! MTV Raps fans will also recall that Ed Lover adopted "The 900 Number" for his dance theme music.
Related: The 100 Best Hip-Hop One-Hit Wonders