The Billboard Hot 100 is the United States music industry standard singles popularity chart issued weekly by Billboard magazine. Chart rankings are based on radio play and sales; the tracking-week for sales begins on Monday and ends on Sunday, while the radio play tracking-week runs from Wednesday to Tuesday. A new chart is compiled and officially released to the public by Billboard on Thursday. Each chart is dated with the "week-ending" date of the Saturday two weeks after. Example:

The first number one song of the Hot 100 was "Poor Little Fool" by Ricky Nelson on August 4, 1958. As of the issue for the week ending June 9, 2012, the Hot 100 has had 1,015 different number-one hits. Its current number-one is "Somebody That I Used to Know" by Gotye featuring Kimbra.

What has always been known as the Hot 100 had existed for nearly fifteen years as numerous charts, tracking and ranking the most popular singles of the day in several areas. During the 1940s and 1950s, popular singles were ranked in three significant charts:

Whitney Elizabeth Houston (August 9, 1963 – February 11, 2012) was an American recording artist, actress, producer, and model. In 2009, the Guinness World Records cited her as the most-awarded female act of all-time. Houston was one of the world's best-selling music artists, having sold over 170 million albums, singles and videos worldwide. She released seven studio albums and three movie soundtrack albums, all of which have diamond, multi-platinum, platinum or gold certification. Houston's crossover appeal on the popular music charts, as well as her prominence on MTV, starting with her video for "How Will I Know", influenced several African American female artists to follow in her footsteps.

Houston is the only artist to chart seven consecutive No. 1 Billboard Hot 100 hits. She is the second artist behind Elton John and the only female artist to have two number-one Billboard 200 Album awards (formerly "Top Pop Album") on the Billboard magazine year-end charts. Houston's 1985 debut album Whitney Houston became the best-selling debut album by a female act at the time of its release. The album was named Rolling Stone's best album of 1986, and was ranked at number 254 on Rolling Stone's list of the 500 Greatest Albums of All Time. Her second studio album Whitney (1987) became the first album by a female artist to debut at number one on the Billboard 200 albums chart.

Janet Damita Jo Jackson (born May 16, 1966) is an American recording artist and actress. Known for a series of sonically innovative, socially conscious and sexually provocative records, as well as elaborate stage shows, television and film roles, she has been a prominent figure in popular culture for over 25 years. The youngest child of the Jackson family, she began her career with the variety television series The Jacksons in 1976 and went on to appear in other television shows throughout the 1970s and early 1980s, including Good Times and Fame.

After signing a recording contract with A&M in 1982, she came to prominence following the release of her third studio album Control (1986). Her collaborations with record producers Jimmy Jam and Terry Lewis incorporated elements of rhythm and blues, funk, disco, rap, and industrial beats, which led to crossover appeal in popular music. In addition to receiving recognition for the innovation in her records, choreography, music videos, and prominence on radio airplay and MTV, she was acknowledged as a role model for her socially conscious lyrics.

Michael Joseph Jackson (August 29, 1958 – June 25, 2009) was an American recording artist, entertainer, and businessman. Often referred to as the King of Pop, or by his initials MJ, Jackson is recognized as the most successful entertainer of all time by Guinness World Records. His contribution to music, dance, and fashion, along with a much-publicized personal life, made him a global figure in popular culture for over four decades. The seventh child of the Jackson family, he debuted on the professional music scene along with his brothers as a member of The Jackson 5 in 1964, and began his solo career in 1971.

In the early 1980s, Jackson became a dominant figure in popular music. The music videos for his songs, including those of "Beat It", "Billie Jean", and "Thriller", were credited with transforming the medium into an art form and a promotional tool, and the popularity of these videos helped to bring the relatively new television channel MTV to fame. Videos such as "Black or White" and "Scream" made him a staple on MTV in the 1990s. Through stage performances and music videos, Jackson popularized a number of complicated dance techniques, such as the robot and the moonwalk, to which he gave the name. His distinctive musical sound and vocal style influenced numerous hip hop, post-disco, contemporary R&B, pop and rock artists.

DJ Fresh (born as Daniel Stein) is an English Drum & Bass and Dubstep producer and DJ. He was one of the principal members of drum & bass supergroup, Bad Company, alongside Darren White (dBridge), Jason Maldini, and Michael Wojcicki (Vegas). He also owns and runs the pioneering drum & bass label Breakbeat Kaos with Adam F.

Along with the three other members of Bad Company, Fresh founded the record label BC Recordings, as well as the website Dogs On Acid. Bad Company are heralded as one of the finest drum & bass acts ever, having produced numerous genre-defining tracks. Undoubtedly their most renowned track is "The Nine", a track released in 1998 when Fresh was just 21 years old. "The Nine" was later voted the greatest drum & bass track of all time by readers of Knowledge Magazine

Resuming his solo career in 2002, Fresh founded Breakbeat Punk, which merged with Adam F's Kaos Recordings to become Breakbeat Kaos in 2003. In 2004 Dogs on Acid was given its own imprint.

Fresh has worked with artists ranging from Pet Shop Boys, DJ Shadow, Apollo 440 to Andy C and Grooverider, and has also held a working relationship with the drum and bass trio Pendulum, whom he signed to Breakbeat Kaos in 2005.