thumb|[[Santana (band)|Santana and Rob Thomas' "Smooth" was the longest-running single of 1999, topping the chart for 10 consecutive weeks.]]
The Billboard Hot 100 is a chart that ranks the best singles of the United States. Published by Billboard magazine, the data are compiled by Nielsen SoundScan based collectively on each single's weekly physical sales and airplays. There were 15 singles that topped the chart this year. The first of these, "I'm Your Angel" by R. Kelly and Celine Dion, spent two weeks at the top, concluding a six-week run that had begun in December 1998.
During the year, 11 acts had achieved a first U.S. number-one single, including: Britney Spears, Ricky Martin, Jennifer Lopez, Destiny's Child, Dru Hill, Kool Moe Dee, Christina Aguilera, Enrique Iglesias, Jay-Z, Santana, and Rob Thomas. The longest running number-one single is "Smooth" by Santana featuring Matchbox Twenty frontman Rob Thomas, which attained 12 weeks at number-one. Ten of those weeks were logged in 1999 and two additional weeks were logged in 2000.
TLC was the only act with more than one number one song, with them hitting the top twice.
Chart history
thumb|Pop singer [[Cher earned her first number-one single since 1974 and fifth overall when "Believe" topped the chart.]]
thumb|Pop singer [[Christina Aguilera earned her first U.S. number-one single, "Genie in a Bottle".]]
thumb|Spanish singer [[Enrique Iglesias earned his first U.S. number-one single with "Bailamos" which stayed for two consecutive weeks.]]
thumb|Pop singer [[Britney Spears earned her first U.S. number-one peak with "...Baby One More Time".]]
thumb|Singer [[Ricky Martin earned his first U.S. number-one single with "Livin' la Vida Loca".]]
{| class="wikitable" style="font-size:90%;"
|+Key
|style="background-color:#FFFF99"|
|Indicates best-performing single of 1999
|}
{| class="wikitable"
! width=31|
!align="center"|Issue date
!align="center"|Song
!align="center"|Artist(s)
!align="center"|
|-
| bgcolor=#EDEAE0 align=center rowspan=2|836
|January 2
|align="center" rowspan="2"|"I'm Your Angel"
|align="center" rowspan="2"|R. Kelly and Céline Dion
|align="center"|
|-
|January 9
|align="center"|
|-
| bgcolor=#EDEAE0 align=center rowspan=2|837
|January 16
|align="center" rowspan="2"|"Have You Ever?"
|align="center" rowspan="2"|Brandy
|align="center"|
|-
|January 23
|align="center"|
|-
| bgcolor=#EDEAE0 align=center rowspan=2|838
|January 30
|align="center" rowspan="2"| "...Baby One More Time"
|align="center" rowspan="2"| Britney Spears
|align="center"|
|-
|February 6
|align="center"|
|-
| bgcolor=#EDEAE0 align=center rowspan=4|839
|February 13
|align="center" rowspan="4"|"Angel of Mine"
|align="center" rowspan="4"|Monica
|align="center"|
|-
|February 20
|align="center"|
|-
|February 27
|align="center"|
|-
|March 6
|align="center"|
|-
| bgcolor=#EDEAE0 align=center rowspan=4|840
|March 13
|bgcolor=#FFFF99 align="center" rowspan="4"|"Believe"
|align="center" rowspan="4"|Cher
|align="center"|
|-
|March 20
|align="center"|
|-
|March 27
|align="center"|
|-
|April 3
|align="center"|
|-
| bgcolor=#EDEAE0 align=center rowspan=4|841
|April 10
|align="center" rowspan="4"|"No Scrubs"
|align="center" rowspan="4"|TLC
|align="center"|
|-
|April 17
|align="center"|
|-
|April 24
|align="center"|
|-
|May 1
|align="center"|
|-
| bgcolor=#EDEAE0 align=center rowspan=5|842
|May 8
|align="center" rowspan="5"|"Livin' la Vida Loca"
|align="center" rowspan="5"|Ricky Martin
|align="center"|
|-
|May 15
|align="center"|
|-
|May 22
|align="center"|
|-
|May 29
|align="center"|
|-
|June 5
|align="center"|
|-
| bgcolor=#EDEAE0 align=center rowspan=5|843
|June 12
|align="center" rowspan="5"|"If You Had My Love"
|align="center" rowspan="5"|Jennifer Lopez
|align="center"|
|-
|June 19
|align="center"|
|-
|June 26
|align="center"|
|-
|July 3
|align="center"|
|-
|July 10
|align="center"|
|-
| bgcolor=#EDEAE0 align=center|844
|July 17
|align="center"|"Bills, Bills, Bills"
|align="center"|Destiny's Child
|align="center"|
|-
| bgcolor=#EDEAE0 align=center|845
|July 24
|align="center"|"Wild Wild West"
|align="center"|Will Smith featuring Dru Hill and Kool Moe Dee
|align="center"|
|-
| bgcolor=#EDEAE0 align=center rowspan=5|846
|July 31
|align="center" rowspan="5"|"Genie in a Bottle"
|align="center" rowspan="5"|Christina Aguilera
|align="center"|
|-
|August 7
|align="center"|
|-
|August 14
|align="center"|
|-
|August 21
|align="center"|
|-
|August 28
|align="center"|
|-
| bgcolor=#EDEAE0 align=center rowspan=2|847
|September 4
|align="center" rowspan="2"|"Bailamos"
|align="center" rowspan="2"|Enrique Iglesias
|align="center"|
|-
|September 11
|align="center"|
|-
| bgcolor=#EDEAE0 align=center rowspan=3|848
|September 18
|align="center" rowspan="3"|"Unpretty"
|align="center" rowspan="3"| TLC
|align="center"|
|-
|September 25
|align="center"|
|-
|October 2
|align="center"|
|-
| bgcolor=#EDEAE0 align=center rowspan=2|849
|October 9
|align="center" rowspan="2"| "Heartbreaker"
|align="center" rowspan="2"| Mariah Carey featuring Jay-Z
|align="center"|
|-
|October 16
|align="center"|
|-
| bgcolor=#EDEAE0 align=center rowspan=10|850
|October 23
|align="center" rowspan="10"|"Smooth"
|align="center" rowspan="10"|Santana featuring Rob Thomas
|align="center"|
|-
|October 30
|align="center"|
|-
|November 6
|align="center"|
|-
|November 13
|align="center"|
|-
|November 20
|align="center"|
|-
|November 27
|align="center"|
|-
|December 4
|align="center"|
|-
|December 11
|align="center"|
|-
|December 18
|align="center"|
|-
|December 25
|align="center"|
|}
Number-one artists
{| class="wikitable plainrowheaders" style="text-align:center;"
|+ List of number-one artists by total weeks at number one
! Position
! Artist
! Weeks at No. 1
|-
| rowspan=2| 1
| Santana
| rowspan=2| 10
|-
| Rob Thomas
|-
| 3
| TLC
| 7
|-
| rowspan=3| 4
| Ricky Martin
| rowspan=3| 5
|-
| Jennifer Lopez
|-
| Christina Aguilera
|-
| rowspan=2| 7
| Monica
| rowspan=2| 4
|-
| Cher
|-
| rowspan=7| 9
| R. Kelly
| rowspan=7| 2
|-
| Céline Dion
|-
| Brandy
|-
| Britney Spears
|-
| Enrique Iglesias
|-
| Mariah Carey
|-
| Jay-Z
|-
| rowspan=4| 16
| Destiny's Child
| rowspan=4| 1
|-
| Will Smith
|-
| Dru Hill
|-
| Kool Moe Dee
|}
See also
- 1999 in music
- List of Billboard number-one singles
- Billboard Year-End Hot 100 singles of 1999
- List of Billboard Hot 100 top 10 singles in 1999
- List of Billboard Hot 100 number-one singles of the 1990s
References
Additional sources
- Fred Bronson's Billboard Book of Number 1 Hits, 5th Edition ()
- Joel Whitburn's Top Pop Singles 1955-2008, 12 Edition ()
- Joel Whitburn Presents the Billboard Hot 100 Charts: The Nineties ()
- Additional information obtained can be verified within Billboard's online archive services and print editions of the magazine.