Year 1972 (MCMLXXII) was a leap year starting on Saturday (link will display the full calendar) of the Gregorian calendar. Within the context of Coordinated Universal Time (UTC) it was the longest year ever, as two leap seconds were added during this 366-day year, an event which has not since been repeated. (If its begin and end are defined using mean solar time (the legal time scale) then its duration was 31622401.141 seconds of Terrestrial Time (or Ephemeris Time), which is slightly shorter than 1908).

Anssi Kela (born July 29, 1972 in Kerava, Finland) is a Finnish singer-songwriter multi-instrumentalist who has published five albums. The first, Nummela, is one of the best-selling Finnish records – it has sold over 150,000 copies (fivefold platinum). The album is named after Kela's former hometown Nummela, in Vihti. Kela became famous with his hit "Mikan faijan BMW". His song "Milla" is on the soundtrack of the movie Me and Morrison. His 2009 album, Anssi Kela, debuted at number four on the Finnish album chart. Before his solo career Kela played in a band named Pekka ja Susi.

Anssi began his musical career playing various stringed instruments, including the violin, cello and contrabass. In his teens he however became increasingly interested in rock music, and started to focus on guitar and bass instead. He also picked up singing at an early age, and has later shown skills with the drums as well. During his career, Kela has sold over 230,000 records in Finland.

Apart from music, Anssi Kela also a friend of motorsports, driving himself in the Finnish Formula 3 class. Also interested in literature, in 2008 Kela published his debut fiction novel, Kesä Kalevi Sorsan Kanssa (Summer with Kalevi Sorsa).

John William "Johnny" Carson (October 23, 1925 – January 23, 2005) was an American television host and comedian, known for thirty years as host of The Tonight Show Starring Johnny Carson (1962–1992). Carson received six Emmy Awards, the Governor Award, and a 1985 Peabody Award. He was inducted into the Television Academy Hall of Fame in 1987. Johnny Carson was awarded the Presidential Medal of Freedom in 1992 and received a Kennedy Center Honor in 1993.

Although his show was already successful by the end of the 1960s, during the 1970s Carson became an American icon and remained so until his retirement in 1992. He adopted a casual, conversational approach with extensive interaction with guests, an approach pioneered by Arthur Godfrey and previous Tonight Show hosts Steve Allen and Jack Paar. Late night hosts David Letterman, Jay Leno, Conan O'Brien, Craig Ferguson, and Jimmy Fallon have all cited Carson's influence on their late-night talk shows, which resemble his in format and tone.

Carson was born in Corning, Iowa, in the year 1925, to Homer Lloyd "Kit" Carson, a power company manager, and Ruth Hook Carson, who was of Irish descent. He grew up in the nearby towns of Avoca, Clarinda, and Red Oak in southwest Iowa before moving to Norfolk, Nebraska, at the age of eight. At the age of twelve, Carson found a book on magic at a friend's house and immediately purchased a mail-order magician's kit. He debuted as "The Great Carsoni" at fourteen and was paid $3; many other performances at local picnics and country fairs followed.

Joan Alexandra Molinsky (born June 8, 1933), better known by her stage name Joan Rivers, is an American television personality, comedian, and actress. She is known for her brash manner; her loud, raspy voice with a heavy New York accent; and her numerous cosmetic surgeries. Rivers' comic style relies heavily on her ability to poke fun at herself and other Hollywood celebrities.

Joan Rivers was born Joan Alexandra Molinsky in Brooklyn, a borough of New York City, the daughter of Russian Jewish immigrants Beatrice (née Grushman; January 6, 1906 – October 1975) and Meyer C. Molinsky (December 7, 1900 – January 1985). She was raised in Brooklyn, New York, and her family later moved to Larchmont, in Westchester County, New York. She attended Connecticut College between 1950 and 1952 and graduated from Barnard College in 1954 with a bachelor-of-arts degree in English literature and anthropology. Before entering show business, Rivers worked at various jobs such as a tour guide at Rockefeller Center, a writer/proofreader at an advertising agency and as a fashion consultant at Bond Clothing Stores. During this period, the agent Tony Rivers advised her to change her name, so she chose Joan Rivers as her stage name.

The Bee Gees were a musical group founded in 1958. The group's line-up consisted of brothers Barry, Robin, and Maurice Gibb. The trio were successful for most of their decades of recording music, but they had two distinct periods of exceptional success: as a pop act in the late 1960s/early 1970s, and as prominent performers of the disco music era in the late 1970s.

The group sang three-part tight harmonies that were instantly recognisable; Robin's clear vibrato lead was a hallmark of their earlier hits, while Barry's R&B falsetto became their signature sound during the late 1970s and 1980s. The brothers wrote all of their own hits, as well as writing and producing several major hits for other artists.

Born in the Isle of Man to English parents, the Gibb brothers lived their first few years in Chorlton, Manchester, England, then moved in the late 1950s to Redcliffe, Queensland, Australia, where they began their musical careers. After achieving their first chart success in Australia with "Spicks and Specks" (their 12th single), they returned to the United Kingdom in January 1967 where producer Robert Stigwood began promoting them to a worldwide audience.