User:Starcheerspeaksnewslostwars/Billboard pop charts

Mainstream Top 40
The Mainstream Top 40 is an airplay chart from Billboard newspaper, and is also known as Pop Songs on billboard.com. It was often mistaken for and confused with the now discontinued Pop 100 Airplay chart. Whereas the Top 40 Mainstream and Pop 100 Airplay charts both measured the airplay of songs played on Mainstream stations playing pop-oriented music, the Pop 100 Airplay (like the Hot 100 Airplay) measures airplay was based on statistical impressions, while the Top 40 Mainstream chart used the number of total detections. Arbitron sometimes refers to the format as Pop Contemporary Hit Radio.

Rihanna is the artist with most #1 singles, having eight. Lady GaGa and P!nk are tied for second place with seven #1's. Beyoncé, Mariah Carey, Katy Perry and Justin Timberlake are tied for third place, with each having six #1's. Britney Spears, Jennifer Lopez, Avril Lavigne, nad Nelly are in fourth place, each of them having five no. 1 hits, with Boyz II Men, Ace of Base, The Black Eyed Peas, and 3 Doors Down being the most successful bands, with three number ones each. JoJo became at the age of thirteen, the youngest solo artist to have a number-one single in the United States, when "Leave (Get Out)" peaked at #1. Lady Gaga is the only artist to have her first six singles peak at #1 consecutively

Chart criteria
There are forty positions on this chart and it is solely based on radio airplay. 132 Top 40 Mainstream radio stations are electronically monitored 24 hours a day, seven days a week by Nielsen Broadcast Data Systems. Songs are ranked by a calculation of the total number of spins per week with its "audience impression", which is based upon exact times of airplay and each station's Arbitron listener data.

Songs receiving the greatest growth will receive a "bullet", although there are tracks that will also get bullets if the loss in detections doesn't exceed the percentage of downtime from a monitored station. "Airpower" awards are issued to songs that appear on the top 20 of both the airplay and audience chart for the first time, while the "greatest gainer" award is given to song with the largest increase in detections. A song with six or more spins in its first week is awarded an "airplay add". If a song is tied for the most spins in the same week, the one with the biggest increase that previous week will rank higher, but if both songs show the same amount of spins regardless of detection the song that is being played at more stations is ranked higher. Songs that fall below the top 20 and have been on the chart after 26 weeks are removed and go to recurrent status.

Use in countdown shows
From January 9, 1993 up until its last first-run show on January 28, 1995, American Top 40 used this chart as its main source.

Adult Top 40
Adult Top 40 (formerly known as Hot Adult Top 40 Tracks and called Adult Pop Songs on Billboard.com) is a variation on the United States Billboard charts. The chart tracks "the week's most popular adult top 40 songs, ranked by radio airplay audience impressions as measured by Nielsen BDS." It is a format in which the genre is geared more towards an adult audience who are not into hard rock, teen pop, dance music, hip hop, or adult contemporary fare. Though on Billboard.com it is titled "Adult Pop Songs", on the formal Billboard.biz as well as in Billboard magazine, it is referred to as "Adult Top 40".

History
The origins of the Adult Top 40 chart can be traced back to the late 1980s, when several Top 40 stations decided to focus on playing artists in an effort to attract the more desired 25-34 demographic. In 1994, the Adult Top 40 became an official format after years of growth and support from both stations and artists. Most Adult Top 40 stations feature a playlist that include artists such as Lifehouse, Matchbox Twenty, Train, Nickelback, Goo Goo Dolls, Sheryl Crow, Daughtry, Maroon 5, Pink, John Mayer, The Fray, No Doubt, Shania Twain, Avril Lavigne, Kelly Clarkson, Alanis Morissette, Natasha Bedingfield, Jewel, Katy Perry and 3 Doors Down. Its programming is often compared to the musical playlist of the VH1 Channel (as its programming as seen often as a midway point between Top 40 Mainstream and The Adult Contemporary charts). Many Adult Top 40 stations today are a crossover of Hot AC and Top 40 formats, though it's officially classified as a Hot AC format.

The Goo Goo Dolls, Matchbox Twenty, and Maroon 5 are the only groups to have three number-one songs on the Adult Pop Songs chart. Daughtry, Katy Perry and Train are tied for second most number ones on the chart, all with four. Pink and Nickelback hold the record for the most, each with five.

Sheryl Crow, is the artist with the most placed singles in this chart with 19 to date.

Billboard first published an Adult Top 40 chart in its October 7, 1995 issue. The first number-one song was "Kiss from a Rose" by Seal. The song to spend the most weeks at number one was "Smooth" by Santana (featuring Rob Thomas), which spent 25 weeks at number one in 1999 and 2000.

Adult Contemporary
The Adult Contemporary chart (formerly known as Hot Adult Contemporary Tracks, Adult Contemporary Singles, Easy Listening, Pop-Standard Singles and Middle-Road Singles) is a weekly chart published in Billboard magazine that lists the most popular songs on adult contemporary and "lite-pop" radio stations in the United States. The chart is compiled based on airplay data submitted to Billboard by stations that are members of the Adult Contemporary radio panel. The chart debuted in Billboard magazine on July 17, 1961.

Chart history
The Billboard Easy Listening chart, as it was first known, was born of a desire by some radio stations in the late 1950s and early 1960s to continue playing current hit songs but distinguish themselves from being branded as "rock and roll" stations. Billboard had written articles about this trend during the time, and the magazine’s editors decided to publish a separate chart for these songs beginning in 1961. The magazine offered an "Easy Listening" programming guide beginning January 9, 1961, which continued until the numbered chart appeared in July. The first #1 song on the Billboard Easy Listening chart was "The Boll Weevil Song" by Brook Benton. From 1961 to 1965, this chart was compiled from the Billboard Hot 100 chart by removing songs that were deemed rock and roll by the magazine and re-ranking the remaining songs. For example, if the non-rock and roll records in the Hot 100 Top 10 were at #5, #6, and #9, then #5 would be #1 that week on the Easy Listening chart, #6 would be #2, and #9 would be #3. Beginning in 1965, the Easy Listening chart would begin to be compiled by a method similar to the one used for other Billboard singles charts: reported playlists from radio stations airing the format as well as sales data submitted by record stores. By the early 1990s, automatic song detection and barcode sales information had begun to be the norm for most of the Billboard charts, and currently the Hot Adult Contemporary Tracks chart is compiled in much the same way as those for other radio formats.

The chart was known as the Easy Listening chart until 1962, when it was re-named Middle-Road Singles. In 1964, the name changed again, this time to Pop-Standard Singles. After alternating the name of this chart twice more in less than a year, Easy Listening was again chosen as the chart name in 1965 when the change in compilation occurred. In April 1979, the Easy Listening chart officially became known as Adult Contemporary, and those two words have remained consistent in the name of the chart ever since.

In 1996, Billboard created a new chart called Adult Top 40, which reflects programming on radio stations that exists somewhere between "adult contemporary" music and "pop" music. Although they are sometimes mistaken for each other, the Adult Contemporary chart and the Adult Top 40 chart are separate charts, and songs reaching one chart might not reach the other. In addition, the term "hot AC" refers to another sub-genre of radio programming that is distinct from the Hot Adult Contemporary Tracks chart as it exists today, despite the apparent similarity in name.

The 1960s
In the early years of the Easy Listening chart, the top song on the chart was generally always a Top 10 pop hit as well. The methodology for compiling the chart at that time allowed some rock and roll artists, such as Lesley Gore and The Drifters, to make the chart on occasion with their softer or ballad releases, regardless of whether Easy Listening and middle of the road radio stations were actually playing those songs. After 1965, differences between the Hot 100 chart and the Easy Listening chart became more pronounced. Better reflecting what middle of the road stations were actually playing, the composition of the chart changed dramatically. As rock music continued to harden, there was much less crossover between the Hot 100 and Easy Listening chart than there had been in the early half of the 1960s. Several #1 Easy Listening hits of the late 1960s made the pop chart in only minor positions, "Bubbled Under" the Hot 100, or (as was the case with John Gary's 1967 hit "Cold") failed even to "Bubble Under". In 1967, only one single reached #1 on both the Easy Listening and Hot 100 charts - "Somethin' Stupid" by Frank Sinatra and Nancy Sinatra. This trend began to reverse by the end of the decade.

Notable artists with multiple #1 songs on this chart during the 1960s include Elvis Presley, Connie Francis, Dean Martin, Andy Williams, The 5th Dimension, and Glen Campbell. "Love Is Blue" by Paul Mauriat held the top of the Easy Listening chart for 11 weeks in 1968, which remained the longest stay at #1 on this chart until 1993.

The 1970s
The Hot 100 and Easy Listening charts became more similar again toward the end of the 1960s and into the early and mid-1970s, when the texture of much of the music played on Top 40 radio once more began to soften. Contemporary artists who recorded adult-appeal music, such as The Carpenters, Barry Manilow, Anne Murray, Olivia Newton-John, Barbra Streisand, Art Garfunkel and John Denver began to be played more often on Top 40 radio. Much of the music recorded by singer-songwriters such as Carole King, Carly Simon, James Taylor and Janis Ian got as much, if not more, airplay on this format than on Top 40 stations. Easy Listening radio also began including songs by artists who had begun in other genres, such as rock and roll or R&B.

The longest stay at #1 on the Easy Listening chart in the 1970s was "Time Passages" by Al Stewart, which remained atop the chart for ten weeks. More common, however, was a high turnover rate at the summit of the Easy Listening survey during this decade. Over a three year period from 1973 through 1975, there were 100 #1 songs on this chart, and most remained atop the chart for a single week. Among songs which topped both the Easy Listening (renamed Adult Contemporary in 1979) and pop charts in the 1970s were "Song Sung Blue" by Neil Diamond, "Annie's Song" by John Denver, "Have You Never Been Mellow" by Olivia Newton-John, "Love Will Keep Us Together" by Captain & Tennille and "You Light Up My Life" by Debby Boone.

The 1980s
Some of the artists who achieved success on the adult contemporary chart in the 1980s were already established names, such as Elton John, Chicago, Dan Fogelberg, Kenny Rogers and Dionne Warwick, while newer acts such as Whitney Houston, Madonna, Air Supply, Lionel Richie and Gloria Estefan also made an impact on the chart. The amount of crossover between the AC chart and the Hot 100 has varied based on how much the passing pop music trends of the times appealed to adult listeners. Not many disco or new wave songs were particularly successful on the AC chart during the late 1970s and early 1980s, and much of the hip-hop and harder rock music featured on CHR formats later in the decade would have been unacceptable on AC radio.

No song spent more than six weeks at #1 on this chart during the 1980s, with nine songs accomplishing that feat. Two of these were by Lionel Richie, "You Are" in 1983 and "Hello" in 1984, which also reached #1 on the Hot 100. Other songs reaching the summit on both the AC and pop charts include "Time After Time" by Cyndi Lauper, "I Just Called to Say I Love You" by Stevie Wonder, "Seasons Change" by Exposé and "Right Here Waiting" by Richard Marx.

The 1990s
With the above-mentioned changes in compilation to the Billboard Hot 100 chart in the early 1990s, many of the secondary charts began to experience differences as well. Certain songs achieved higher debut positions on the Hot 100 due to the new formulas used to calculate chart positions, and lengthy stays at #1 became more common. This trend began to surface on the AC chart in 1993, when two consecutive singles ("The River of Dreams" by Billy Joel and "Said I Loved You...But I Lied" by Michael Bolton) logged twelve weeks apiece atop the AC chart, surpassing "Love Is Blue"'s previous mark of eleven weeks at #1. As the decade progressed, other songs had extended stays at #1, including "Change the World" by Eric Clapton (13 weeks, 1996), "Un-Break My Heart" by Toni Braxton (14 weeks, 1997) and "Because You Loved Me" by Celine Dion (19 weeks, 1996).

In addition to Dion, who has had significant success on this chart, other artists with multiple #1s on the AC chart in the 1990s include Mariah Carey, Phil Collins, Michael Bolton, Whitney Houston and Shania Twain. Newer female singer-songwriters such as Sarah McLachlan, Jewel, Melissa Etheridge and Sheryl Crow also broke through on the AC chart during this time.

The 2000s
A notable pattern that has developed during the 2000s decade has been for certain pop songs to have lengthy runs on the Hot Adult Contemporary Tracks chart, even after the songs have fallen off the Hot 100. Songs such as "Love Story" and "You Belong with Me" by Taylor Swift, "Waiting on the World to Change" by John Mayer, "Love Song" by Sara Bareilles and "You're Beautiful" by James Blunt have remained on the AC chart for many weeks, in some cases over a year after the song was originally released. An article on MTV's website by Corey Moss describes this trend: "In other words, AC stations are where pop songs go to die a very long death. Or, to optimists, to get a second life." One theory states that many adult contemporary stations play less newer music because they also give ample airtime to hits of the past, so the de-emphasis on new songs slows the progression of the AC chart. Also, certain program directors have asserted that AC is a song-based format, as opposed to other radio formats that are infused with singer-based programming, so there is no guarantee that a new single by a certain artist will appeal to the listeners.

The current record for most weeks atop the Hot Adult Contemporary Tracks chart is 28, achieved by Uncle Kracker featuring Dobie Gray's 2003 remake of Gray's 1973 hit, "Drift Away". Two other songs have logged more than 20 weeks apiece at the summit, Celine Dion's "A New Day Has Come" from 2002 and Kelly Clarkson's 2005 song "Breakaway". Both songs spent 21 weeks at #1 on the AC chart. In addition to Clarkson, other American Idol performers who have seen success on this chart include David Cook, David Archuleta, Kimberley Locke, Chris Daughtry, Carrie Underwood, Jordin Sparks, Michael Keeth, Kris Allen and Adam Lambert.

Through 2006, Celine Dion has logged 87 weeks atop the AC chart, which is the most for any artist; tied for second place with 47 weeks apiece are Elton John and Lionel Richie. John and the Carpenters are tied with the most number of chart-toppers on this survey with 15 apiece.

Other formats
Relatively few urban contemporary and hip-hop artists manage to successfully cross over to AC, although there have been a few recent exceptions, such as Beyoncé's "Irreplaceable," Fergie's ballad "Big Girls Don't Cry," Gnarls Barkley's "Crazy," Rihanna's "Take A Bow" and Timbaland's remix of OneRepublic's "Apologize." R&B artists who have achieved success on the AC chart in the past include Ray Charles, Dionne Warwick, Whitney Houston and Lionel Richie.

Crossover from the country charts has also been common on the AC chart since the chart began. Among the country stars who had a number of singles cross over to the AC chart (and the pop chart as well) from the 1960s through the 1980s included Brenda Lee, Ray Price, Patsy Cline, Ronnie Milsap, Dolly Parton, Kenny Rogers, Eddie Rabbitt, Crystal Gayle, Willie Nelson, and Juice Newton. The huge growth of country music as a radio format in the 1990s brought a number of new country crossovers onto the AC airwaves, including Martina McBride, LeAnn Rimes, Shania Twain, Faith Hill, Lonestar, Mary Chapin Carpenter, and Garth Brooks. More recently, a new wave of country performers has been crossing over to AC, including Tim McGraw, the Dixie Chicks (who topped the AC chart with their cover of Fleetwood Mac's "Landslide"), Rascal Flatts, Carrie Underwood, and Taylor Swift.

The Contemporary Christian music market has also been relatively successful in crossing over to mainstream radio. In the mid-1980s, the most successful CCM artist at the time, Amy Grant, crossed over into secular music with the 1985 single "Find a Way," which became a Top Ten AC hit and a #1 Christian single simultaneously. In the 1990s and into the 2000s decade, other artists such as MercyMe, Natalie Grant, Kathy Troccoli, Sixpence None the Richer, and Michael W. Smith have crossed in between the Christian and secular worlds with little disapproval from their fan bases.

Recurrents
Hot Adult Contemporary Recurrents ranks airplay from the Hot Adult Contemporary Tracks chart that have reached Billboard recurrent criteria. Descending songs are moved to recurrent status based upon the following three-tiered system: if they rank below the top five after 52 weeks, if they rank below the top 10 after 26 weeks, or if they rank below the top 15 after 20 weeks.

Exceptions are sometimes made, usually on a case-by-case basis. Occasionally an older song is re-released (for example, featured on a current movie soundtrack and given a renewed promotional push from a record label) or a song can take an extended amount of time to climb to position fifteen. Billboard chart managers ultimately make the decision about which songs can remain on the current chart in such cases.