The Billboard Hot 100 is a chart that ranks the best-performing singles of the United States. Published by Billboard magazine, the data are compiled by Nielsen SoundScan based collectively on each single's weekly physical and digital sales, and airplay. There were a total of 12 number-one singles in 2009, although 13 claimed the top spot as Beyoncé's "Single Ladies (Put a Ring on It)" reached its peak position in 2008, and thus is excluded.
In 2009, six acts achieved their first U.S. number-one single either as a lead artist or a featured guest: Lady Gaga, Colby O'Donis The Black Eyed Peas, Jay Sean, Jason Derulo, and Owl City. Jay-Z earned his first number-one single as a lead artist (with Alicia Keys) with "Empire State of Mind", after being the featured guest on three number-one singles. Lady Gaga and Black Eyed Peas each earned two number-one singles.
Black Eyed Peas broke the record for having spent the most consecutive weeks at number one (26 weeks consecutive weeks at the top) with "I Gotta Feeling" the longest-running number-one single of 2009 and of the 2000s (decade) (fourteen weeks), along with the non-consecutive Mariah Carey's "We Belong Together" in 2005, and their first number-one single "Boom Boom Pow", which topped the chart for twelve weeks.
Notable highlights of the 2009 Billboard Hot 100 issues include Kelly Clarkson's "My Life Would Suck Without You", which broke the record for the biggest leap to number one by jumping from number 97 to the number-one position. Britney Spears's "3" became the only non-'American Idol' song to debut at number one in the 2000s (decade).
Chart history
+KeyIndicates best-performing single of 2009 Issue dateSongArtist(s)Ref.reJanuary 3"Single Ladies (Put a Ring on It)"Beyoncé January 10968January 17"Just Dance" Lady Gaga featuring Colby O'DonisJanuary 24January 31969February 7"My Life Would Suck Without You"Kelly ClarksonFebruary 14970February 21"Crack a Bottle"Eminem, Dr. Dre and 50 Cent971February 28"Right Round"Flo RidaMarch 7March 14March 21March 28April 4972April 11"Poker Face"Lady Gaga973April 18"Boom Boom Pow"The Black Eyed PeasApril 25May 2May 9May 16 May 23 May 30 June 6 June 13June 20June 27July 4974July 11"I Gotta Feeling"July 18July 25August 1August 8August 15August 22August 29September 5September 12September 19September 26October 3October 10975October 17"Down"Jay Sean featuring Lil Wayne 976October 24"3"Britney Spears reOctober 31"Down"Jay Sean featuring Lil Wayne977November 7"Fireflies"Owl City978November 14"Whatcha Say"Jason DeruloreNovember 21"Fireflies"Owl City979November 28"Empire State of Mind"Jay-Z and Alicia KeysDecember 5December 12December 19December 26
Number-one artists + List of number-one artists by total weeks at number one Position Artist Weeks at No. 1 1 The Black Eyed Peas 26 2 Flo Rida 6 3 Jay-Z 5 Alicia Keys 5 Lady Gaga 4 6 Colby O'Donis 3 7 Beyoncé 2 Kelly Clarkson Jay Sean Lil Wayne Owl City 12 Eminem 1 Dr. Dre 50 Cent Britney Spears Jason Derulo
See also 2009 in music List of Billboard 200 number-one albums of 2009 List of Billboard Hot 100 top 10 singles in 2009 Billboard Year-End Hot 100 singles of 2009 List of Billboard number-one singles List of Billboard Hot 100 number-one singles of the 2000s
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 2000s () Additional information obtained can be verified within Billboard's online archive services and print editions of the magazine.