In mathematics, the phrase "almost all" has a number of specialised uses.

"Almost all" is sometimes used synonymously with "all but [except] finitely many" (formally, a cofinite set) or "all but a countable set" (formally, a cocountable set); see almost.

A simple example is that almost all prime numbers are odd. (Two is a prime number.)

When speaking about the reals, sometimes it means "all reals but a set of Lebesgue measure zero" (formally, almost everywhere). In this sense almost all reals are not a member of the Cantor set even though the Cantor set is uncountable.

In number theory, if P(n) is a property of positive integers, and if p(N) denotes the number of positive integers n less than N for which P(n) holds, and if

(see limit), then we say that "P(n) holds for almost all positive integers n" (formally, asymptotically almost surely) and write

For example, the prime number theorem states that the number of prime numbers less than or equal to N is asymptotically equal to N/ln N. Therefore the proportion of prime integers is roughly 1/ln N, which tends to 0. Thus, almost all positive integers are composite (not prime), however there are still an infinite number of primes.

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.

Glennis Grace (born as Glenda Batta, June 19, 1978, Amsterdam) is a singer from the Netherlands who in 2005 won the national selection in the Netherlands for the Eurovision Song Contest 2005 for the nation. Grace's song was the ballad My Impossible Dream, but she did not advance the semifinal. She was discovered after she won a Dutch TV talent show where she performed Whitney Houston's "One Moment in Time". In April 2011 she reached the top of the Dutch singles chart with a rendition of "Afscheid", originally made famous by Volumia!

Laura Ann Branigan (July 3, 1957 – August 26, 2004) was an Italian-American singer-songwriter and actress. She is best known for her 1982 Platinum-certified hit "Gloria" (an Italian love song recorded by Umberto Tozzi in 1979) and for the number-one single "Self Control" (The original version by the italian singer and writers Raffaele Riefoli "Raf"). Branigan is also remembered for the Top 10 "Solitaire" and for the number-one adult contemporary hit "How Am I Supposed to Live Without You", as well as four other US Top 40 hits.

Branigan also contributed songs to notable motion picture and television soundtracks, including the Grammy and Academy Award-winning Flashdance soundtrack (1983), the Ghostbusters soundtrack (1984), and the Baywatch soundtrack (1994), as well as having songs featured in the popular Grand Theft Auto video game series.

Her signature song "Gloria" stayed on the Billboard Hot 100 for 36 weeks, at the time a record for a female artist. The song holds a place in the top 100 singles of both 1982 and 1983.

Aicelle Anne Santos (born February 24, 1985) is a Filipino Soul, R&B, Pop, and Jazz singer-songwriter and pianist, who first emerged in the Philippine music scene as a contestant in a nationwide search for the next best singer in the first season of ABS-CBN's Star In A Million. She has been known as the "First Undefeated Pinoy Pop Superstar" for achieving eight-straight wins in GMA 7's Pinoy Pop Superstar as the Philippines' "Ballad Princess."^{[citation needed]}

At the age of 6, Aicelle Santos received abecedarian musical training at the St. Scholastica’s College, and the University of the Philippines School of Music for Piano. The early training allowed Aicelle to indulge in her original dream to become a famous pianist. However, a shift in focus took place as she realized she would rather be a famous singer than be a known pianist. Aicelle's inspiration on the field came from Walt Disney's character Ariel from the movie The Little Mermaid. The movie's theme song "Part of Your World" was the first song Aicelle memorized, which she also performed during her elementary school programs.