By Steely Dan, Rikki Don't Lose that Number propelled the album Pretzel Logic to #4 on the Billboard charts in 1974.
Want to know who Rikki is, and why that number is important? Well, per Wikipedia:
In the March 24, 2006 issue of Entertainment Weekly, in an article titled "Back to Annandale", it was revealed that Rikki Ducornet was the apparent inspiration for the song due to a friendship songwriter Donald Fagen had with Ducornet while he attended Bard College. Ducornet was pregnant and married at the time, but recalls Fagen did give her his phone number at a college party while attending Bard and said that she believed she was the subject of the song. Fagen would not confirm the story.
