"Nessun dorma" (English: None shall sleep) is an aria from the final act of Giacomo Puccini's opera Turandot, and is one of the best-known tenor arias in all opera. It is sung by Calaf, il principe ignoto (the unknown prince), who falls in love at first sight with the beautiful but cold Princess Turandot. However, any man who wishes to wed Turandot must first answer her three riddles; if he fails, he will be beheaded.

In the act before this aria, Calaf has correctly answered the three riddles put to all of Princess Turandot's prospective suitors. Nonetheless, she recoils at the thought of marriage to him. Calaf offers her another chance by challenging her to guess his name by dawn. (As he kneels before her, the Nessun dorma theme makes a first appearance, to his words, "Il mio nome non sai!") If she does so, she can execute him; but if she does not, she must marry him. The cruel and emotionally cold princess then decrees that none of her subjects shall sleep that night until his name is discovered. If they fail, all will be killed.

Paul Robert Potts (born 13 October 1970)^{[citation needed]} is an English tenor. In 2007, he won the first series of ITV's Britain's Got Talent with his performance of "Nessun dorma", an aria from Puccini's opera Turandot. As a singer of operatic music, Potts recorded the album One Chance, which topped sales charts in nine countries. Prior to winning Britain's Got Talent, Potts was a manager at The Carphone Warehouse. He had served as Bristol city councillor from 1996 until 2003, and also had performed in amateur opera from 1999 to 2003. Potts's net worth was estimated at £6 million in April 2012.

Potts was born in Kingswood, South Gloucestershire, England and raised in Fishponds, Bristol, by his father Roland, a bus driver, and mother, Yvonne (née Higgins), a supermarket cashier. He has two brothers and one sister. Potts attended St Mary Redcliffe and Temple School, where he developed his love of singing. He also sang with the choir at Chester Park Junior School and with the choirs at several Bristol churches, including Christ Church. Potts said in interviews that he had been bullied in school, and that experience may have made him lack self-confidence. He has also said that his voice had always been a source of solace in the past when he was bullied.

Andrea Bocelli, OMRI, OMDSM (Italian pronunciation: [anˈdrɛːa boˈtʃɛlli]; born 22 September 1958) is an Italian tenor, multi-instrumentalist and classical crossover artist. Born with poor eyesight, he became blind at the age of twelve following a football accident.

Since winning the Newcomers section of the Sanremo Music Festival in 1994, Bocelli has recorded thirteen solo studio albums, of both pop and classical music, two greatest hits albums, and eight complete operas, selling over 75 million records worldwide. Thus, he is the biggest-selling solo artist in the history of classical music and has caused core classical repertoire to "cross over" to the top of international pop charts and into previously uncharted territory in popular culture.

In 1998, he was named one of People Magazine's 50 Most Beautiful People. In 1999, his nomination for Best New Artist at the Grammy Awards marked the first, and so far only time a classical artist had been nominated in the category, since Leontyne Price, in 1961.The Prayer, his duet with Celine Dion for the animated film The Quest for Camelot, won the Golden Globe for Best Original Song and was nominated for an Academy Award in the same category. With the release of his classical album, Sacred Arias, Bocelli captured a listing in the Guinness Book of World Records, as he simultaneously held the top 3 positions on the US classical albums charts. Six of his albums have since reached the Top 10 on the Billboard 200, and a record-setting 8, have topped the classical albums charts in the United States.

Aretha Louise Franklin (born March 25, 1942) is an American musician, singer, songwriter, and pianist. In a recording career that has spanned over half a century, Franklin's repertoire has included gospel, jazz, blues, R&B, pop, rock and funk. Franklin is known as one of the most important popularizers of the soul music genre and is referred to as the Queen of Soul, a title she was given early in her career. Franklin, the daughter of prominent Baptist minister and activist C. L. Franklin, began her singing career singing in her father's church at the age of ten and started recording four years later. After several years in the gospel circuit and with her father's blessing, she formed a secular pop music career at the age of eighteen, signing with Columbia Records, where she was branded by its CEO John Hammond as his most important act since Billie Holiday. Franklin's Columbia period wasn't as successful as hoped and in late 1966, Franklin switched over to Atlantic Records, where she began recording a string of popular hits including "I Never Loved a Man (The Way I Love You)", "(You Make Me Feel Like) A Natural Woman", "Think", "Chain of Fools" and what later became her signature song, "Respect".

Luciano Pavarotti, Cavaliere di Gran Croce OMRI (12 October 1935 – 6 September 2007) was an Italian operatic tenor, who also crossed over into popular music, eventually becoming one of the most commercially successful tenors of all time. He made numerous recordings of complete operas and individual arias, and established himself as one of the finest tenors of the 20th century. He was one of The Three Tenors and became well known for his televised concerts and media appearances. Pavarotti was also noted for his charity work on behalf of refugees and the Red Cross, amongst others.

Pavarotti began his professional career as a tenor in 1961 in Italy. That same year, he made his first international appearance in La traviata in Belgrade, Yugoslavia. He sang in opera houses in addition to Italy, in the Netherlands, Vienna, London, Ankara, Budapest and Barcelona. The young tenor earned valuable experience and recognition while touring Australia at the invitation of soprano Joan Sutherland in 1965. He made his United States debut in Miami soon afterwards, also on Sutherland's recommendation. His position as a leading lyric tenor was consolidated in the years between 1966 and 1972, during which time he first appeared at Milan's La Scala and other major European houses. In 1968, he debuted at New York City's Metropolitan Opera as Rodolfo in Puccini's La bohème. At the Met in 1972, in the role of Tonio in Donizetti's La fille du régiment he earned the title "King of the high Cs" when he sang the aria "Ah mes amis ... pour mon âme". He gained worldwide fame for the brilliance and beauty of his tone, especially into the upper register. He was at his best in bel canto operas, pre-Aida Verdi roles and Puccini works such as La bohème, Tosca and Madama Butterfly. The late 1970s and 1980s saw Pavarotti continue to make significant appearances in the world's foremost opera houses.