![Tower of Power is an American R&B, soul and funk based horn section and band, originating in Oakland, California that has been performing for over 40 years.[1]](http://web.archive.org./web/20110902014842im_/http://cdn0.wn.com/pd/f5/f0/865f065e8fa8782eb758696286fd_grande.jpg "Tower of Power is an American R&B, soul and funk based horn section and band, originating in Oakland, California that has been performing for over 40 years.[1]")
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The first number one song of the Hot 100 was "Poor Little Fool" by Ricky Nelson on August 4, 1958. As of the issue dated June 25, 2011, the Hot 100 has had 1,003 different number-one hits. Its current number-one is "Rolling in the Deep" by Adele.
Although officially all three charts had equal "weight" in terms of their importance, many chart historians refer to the Best Sellers In Stores chart when referencing a song’s performance prior to the creation of the Hot 100. Billboard eventually created a fourth singles popularity chart that combined all aspects of a single’s performance (sales, airplay and jukebox activity), based on a point system that typically gave sales (purchases) more weight than radio airplay. On the week ending November 12, 1955, Billboard published The Top 100 for the first time. The Best Sellers In Stores, Most Played By Jockeys and Most Played In Jukeboxes charts continued to be published concurrently with the new Top 100 chart.
On June 17, 1957, Billboard discontinued the Most Played In Jukeboxes chart, as the popularity of jukeboxes waned and radio stations incorporated more and more rock-oriented music into their playlists. The week ending July 28, 1958 was the final publication of the Most Played By Jockeys and Top 100 charts, both of which had Perez Prado's instrumental version of "Patricia" ascending to the top.
On August 4, 1958, Billboard premiered one main all-genre singles chart: the Hot 100. Although similar to the Top 100, the first Hot 100 chart reset all songs’ "weeks on chart" status to "1". The Hot 100 quickly became the industry standard and Billboard discontinued the Best Sellers In Stores chart on October 13, 1958.
Billboard produces the Hot 100 to this day and it is still the standard by which a song’s popularity is measured in the United States. The Hot 100 is ranked by radio airplay audience impressions as measured by Nielsen BDS, sales data compiled by Nielsen Soundscan (both at retail and digitally) and streaming activity provided by online music sources.
There are several component charts that contribute to the overall calculation of the Hot 100. The most significant ones are shown below.
As the advent of a singles music chart spawned chart historians and chart-watchers and greatly affected pop culture and produced countless bits of trivia, the main purpose of the Hot 100 is to aid those within the music industry – to reflect the popularity of the "product" (the singles, the albums, etc.) and to track the trends of the buying public. Billboard has (many times) changed its methodology and policies to give the most precise and accurate reflection of what is popular. A very basic example of this would be the ratio given to sales and airplay. During the Hot 100’s early history, singles were the leading way by which people bought music. At times when singles sales were robust, more weight was given to a song’s retail points than to its radio airplay.
As the decades passed, the recording industry concentrated more on album sales than singles sales. Musicians eventually expressed their creative output in the form of full-length albums rather than singles, and by the 1990s many record companies stopped releasing singles altogether (see Album Cuts, below). Eventually a song’s airplay points were weighted more so than its sales. Billboard has adjusted the sales/airplay ratio many times to more accurately reflect the true popularity of songs.
Starting with the Hot 100 chart for the week ending November 29, 1969, this rule was altered; if both sides received significant airplay, they were listed together. This started to become a moot point by 1972, as most major record labels solidified a trend they had started in the 1960s by putting the same song on both sides of the singles it serviced to radio.
More complex issues began to arise as the typical A-and-B-side format of singles gave way to 12 inch singles and maxi-singles, many of which contained more than one B-side. Further problems arose when, in several cases, a B-side would eventually overtake the A-side in popularity, thus prompting record labels to release a new single, featuring the former B-side as the A-side, along with a "new" B-side.
The inclusion of album cuts on the Hot 100 put the double-sided hit issues to rest permanently.
It was during this period that several popular mainstream hits never charted on the Hot 100, or charted well after their airplay had declined. During the period that they were not released as singles the songs were not eligible to chart. Many of these songs dominated the Hot 100 Airplay chart for extended periods of time:
As debate and conflicts occurred more and more often, Billboard finally answered the requests of music industry artists and insiders by including airplay-only singles (or "album cuts") in the Hot 100.
The change in formula has shaken up the chart considerably, with some songs debuting on the chart strictly with robust online sales and others making drastic leaps. In recent years, several songs have been able to achieve 80-to-90 position jumps in a single week as their digital components were made available at online music stores. Since 2006, the all-time record for the biggest single-week upward movement was broken nine times.
In the issue dated August 11, 2007, Billboard began incorporating weekly data from Streaming media and On-demand services into the Hot 100. The first two major companies to provide their statistics to Nielsen BDS on a weekly basis are AOL Music and Yahoo! Music, with more to follow in the future.
To address this issue, Billboard now separates airplay points from a song’s original version and its remix, if the remix is determined to be a "new song". Since administering this new chart rule, several songs have charted twice, normally credited as "Part 1" and "Part 2". The remix rule is still in place.
The most notable exception to the recurrent entry policy applies to holiday-themed releases, which are commonly reissued year after year in anticipation of Christmas purchasing. After its initial chart run, a holiday entry cannot re-enter the Hot 100 in subsequent years.
After Billboard began obtaining sales and airplay information from Nielsen SoundScan, the year-end charts are now calculated by a very straightforward cumulative total of yearlong sales and airplay points. This gives a more accurate picture of any given year’s most popular tracks, as a song that hypothetically spent nine weeks at number one in March could possibly have earned fewer cumulative points than a song that spent six weeks at number three in January. Songs at the peak of their popularity at the time of the November/December chart-year cutoff many times end up ranked on the following year's chart as well, as their cumulative points are split between the two chart-years, but often are ranked lower than they would have been had the peak occurred in a single year.
Few music historians believe that the Hot 100 has been a perfectly accurate gauge of the most popular songs for each week or year. For example, during the 1950s and 1960s, payola and other problems skewed the numbers in largely undetectable ways.
Further, the history of popular music shows nearly as many remarkable failures to chart as it does impressive charting histories. Certain artists (such as Pink Floyd and Led Zeppelin) had tremendous album sales while being oblivious to the weekly singles charts. Business changes in the industry also affect artists' statistical "records." Single releases were more frequent and steady, and were expected to have much shorter shelf lives in earlier decades, making direct historical comparisons somewhat specious. Of the sixteen singles to top the Billboard chart for more than ten weeks since 1955, just one was released before 1992. During the first forty years of the rock era, no song had ever debuted at number one; since a 1995 change in methodology, nineteen songs have.
Strategizing also plays a role. Numerous artists have taken deliberate steps to maximize their chart positions by such tactics as timing a single's debut to face the weakest possible competition, or massively discounting the price of singles to the point where each individual sale represented a financial loss. Meanwhile, other artists would deliberately withhold even their most marketable songs in order to boost album sales. Particularly in the 1990s, many of the most heavily played MTV and radio hits were unavailable for separate purchase. Because of such countervailing strategies, it cannot be said that a Hot 100 chart necessarily lists the country's 100 most popular or successful songs. Strategies like these were the main reason behind the December 1998 change in the charts.
Some critics have argued that an overemphasis on a limited number of singles has distorted record industry development efforts, and there are nearly as many critics of the Hot 100 as there are supporters. Certain of these criticisms, however, are becoming less and less germane as digital downloads have revitalized the concept of “singles sales.”
The Billboard charts have endured as the only widely-circulated published report on songs that have been popular across the United States over the last half-century. Competing publications such as Cash Box, Record World, Radio & Records and most recently Mediabase have offered alternate charts, which sometimes differed widely.
The Canadian Hot 100 was launched June 16, 2007. Like the Hot 100 chart, it uses sales and airplay tracking compiled by Nielsen SoundScan and BDS.
The Japan Hot 100 was launched in the issue dated May 31, 2008, using the same methodologies as the Hot 100 charts for the U.S. and Canada, utilizing sales and airplay data from SoundScan Japan and radio tracking service Plantech.
This text is licensed under the Creative Commons CC-BY-SA License. This text was originally published on Wikipedia and was developed by the Wikipedia community.
![Tower of Power is an American R&B, soul and funk based horn section and band, originating in Oakland, California that has been performing for over 40 years.[1]](http://web.archive.org./web/20110902014842im_/http://cdn9.wn.com/pd/f5/f0/865f065e8fa8782eb758696286fd_thumb.jpg "Tower of Power is an American R&B, soul and funk based horn section and band, originating in Oakland, California that has been performing for over 40 years.[1]")
