Question: Which  aria from the final act of Giacomo Puccini's opera did  Paul Potts perform 

Context paragraphs:
Ch'ella mi creda: "Ch'ella mi creda" is a tenor aria from act 3 of the opera "La fanciulla del West" by Giacomo Puccini.  It is the tenor aria sung by Dick Johnson (a.k.a. the bandit "Ramerrez") before he is to be executed by a lynch mob of gold prospectors led by Sheriff Jack Rance.  In the aria, Johnson asks them not to tell Minnie, whom he loves, that he has been killed.  Instead, he asks them to "let her believe" (the title phrase, "ch'ella mi creda") that he is far away, on the road to redemption from his bandit past.

Torna ai felici dì: "Torna ai felici dì" (Return to the happy days) is an aria from Act 2 of the 1884 opera, "Le Villi" by Giacomo Puccini.  It is sung by Roberto (tenor).  It was composed during the performances at La Scala in 1885 (the first performance took place on January 24) and inserted into Roberto's "dramatic scene", composed a few months earlier for the Turin version (Teatro Regio, 27 December 1884).  In this form it was published by Ricordi in the second Italian edition of the score for voice and piano (1885).  In 1889 further amendments were made to the opera, eliminating the previous scene, leaving only the dramatic romanza (fourth edition: 1891).

Paul Potts: Paul Robert Potts (born 13 October 1970) is a British 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 pop music, Potts recorded the album "One Chance", which topped sales charts in thirteen countries .  Prior to winning "Britain's Got Talent", Potts was a manager at The Carphone Warehouse.  He had served as a Bristol city councillor from 1996 until 2003, and also had performed in amateur opera from 1999 to 2003.

Gianni Schicchi: Gianni Schicchi (] ) is a comic opera in one act by Giacomo Puccini to an Italian libretto by Giovacchino Forzano, composed in 1917–18.  The libretto is based on an incident mentioned in Dante's "Divine Comedy".  The work is the third and final part of Puccini's "Il trittico" (The Triptych)—three one-act operas with contrasting themes, originally written to be presented together.  Although it continues to be performed with one or both of the other "trittico" operas, "Gianni Schicchi" is now more frequently staged either alone or with short operas by other composers.  The aria "O mio babbino caro" is one of Puccini's best known, and one of the most popular arias in opera.

O mio babbino caro: "O mio babbino caro " ("Oh My Beloved Father") is a soprano aria from the opera "Gianni Schicchi" (1918) by Giacomo Puccini to a libretto by Giovacchino Forzano.  It is sung by Lauretta after tensions between her father Schicchi and the family of Rinuccio, the boy she loves, have reached a breaking point that threatens to separate her from Rinuccio.  It provides an interlude expressing lyrical simplicity and single-hearted love in contrast with the atmosphere of hypocrisy, jealousy, double-dealing, and feuding in the medieval Florence of Puccini's only comedy.  It provides the only set-piece in the through-composed opera.

Natasha Marsh: Natasha Jane Marsh (born 1975) is a Welsh soprano singer.  A highly regarded performer in both opera and oratorio, her debut album, "Amour", topped the classical album charts in 2007.  She has toured with artists such as G4, Russell Watson, Il Divo and Paul Potts.  Her love of football was confirmed when she sang at the 2008 League Cup Final and she has recorded Mozart's "Queen of the Night" aria for ITV's coverage of Euro 2008.

Bar Wizards: The Bar Wizards (Neil Lowrey and Neil Garner) are a British Flair bartending act.  They first rose to fame when they were finalists in the first series of the British television talent show "Britain's Got Talent" in 2007, in which they lost to the eventual winner, singer Paul Potts.  The Bar Wizards started off as bartenders but now perform their Tandem Flair Show worldwide, and bartend at private parties.

Non piangere, Liù: "Non piangere, Liù" (Don't cry, Liù) is an aria sung by Calàf, the "Unknown Prince", in Act I of the Italian opera Turandot, by Giacomo Puccini.  The lyrics were written by Giuseppe Adami and Renato Simoni.  The scene takes place before the walls of the imperial palace.  In the preceding aria ("Signore, ascolta! " - "My lord, listen!" ) , Liù begs Calàf not to risk his life by playing a deadly game to marry Princess Turandot, and Calàf responds to her gently, asking her not to cry.

Nessun dorma: "Nessun dorma " (] ; English: "None shall sleep") is an aria from the final act of Giacomo Puccini's opera "Turandot" and 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 aria, Calaf expresses his triumphant assurance that he will win the princess.

Australia's Got Talent (season 3): Australia's Got Talent is an Australian reality television show, based on the original UK series, to find new talent.  The third season premiered on the Seven Network on 4 February 2009 and ended on 22 April 2009.  The Grand Finale followed the same format as the 2008 one: acts were eliminated in pairs, as well as each judge picking their favorite act to reappear on the show once more.  Mark Vincent won the season, while Jal Joshua became the runner-up.  On the grand finale, international opera singer and winner of "Britain's Got Talent" series one, Paul Potts performed live in the studio.  The season was won by Opera Singer, Mark Vincent, who received $250,000.

Supporting paragraphs: Paul Potts Nessun dorma
Answer: "Nessun dorma "