I puritani (The Puritans) is an opera in three acts by Vincenzo Bellini. It was his last opera. Its libretto is by Count Carlo Pepoli, based on Têtes rondes et Cavaliers by Jacques-François Ancelot and Joseph Xavier Saintine, which is in turn based on Walter Scott's novel Old Mortality. It was first produced at the Théâtre-Italien in Paris, January 24, 1835. At the same time, Bellini composed an alternative version intended for the famous Maria Malibran, who was to sing it in Naples; in fact, this version was not performed on stage until April 10, 1986 at the Teatro Petruzzelli, Bari.

A fortress near Plymouth, commanded by Lord Gualtiero Valton

At daybreak, the Puritan soldiers anticipate victory over the Royalists. Riccardo had been promised Elvira's hand in marriage by Lord Valton but, returning to Plymouth, he finds that she is in love with Arturo (a Royalist), and will marry him instead. He confides in Bruno ("Ah! Per sempre ... Bel sogno beato").

In Elvira's apartments, Giorgio reveals that it was he who persuaded Lord Valton to grant Elvira's wish. She is overjoyed.

Vincenzo Salvatore Carmelo Francesco Bellini (3 November 1801 – 23 September 1835) was a Italian opera composer. A native of Catania in Sicily, his greatest works are I Capuleti ed i Montecchi (1830), La sonnambula (1831), Norma (1831), Beatrice di Tenda (1833), and I puritani (1835). Known for his long-flowing melodic lines, for which he was named "the Swan of Catania", Bellini was the quintessential composer of bel canto opera. He died in Puteaux, France at the age of 33, nine months after the premiere of his last opera, I puritani.

Born in Catania, Sicily, Bellini was a child prodigy from a highly musical family and legend has it he could sing an aria of Valentino Fioravanti at eighteen months. He began studying music theory at two, the piano at three, and by the age of five could apparently play well. Bellini's first five pieces were composed when he was just six years old. Regardless of the veracity of these claims, it is certain that Bellini grew up in a musical household and that a career as a musician was never in doubt.

Dame Joan Alston Sutherland, OM, AC, DBE (7 November 1926 – 10 October 2010) was an Australian dramatic coloratura soprano noted for her contribution to the renaissance of the bel canto repertoire from the late 1950s through to the 1980s.

One of the most remarkable female opera singers of the 20th century, she was dubbed La Stupenda by a La Fenice audience in 1960 after a performance of the title role in Handel's Alcina. She possessed a voice of beauty and power, combining extraordinary agility, accurate intonation, "supremely" pinpoint staccatos, a splendid trill and a tremendous upper register, although music critics often complained about the imprecision of her diction. Her friend Luciano Pavarotti once called Sutherland the "Voice of the Century"; Montserrat Caballé described the Australian's voice as being like "heaven".

Joan Sutherland was born to Scottish parents in Sydney, and attended St Catherine's School in the suburb of Waverley, New South Wales. As a child, she listened to and imitated her mother's singing exercises. Her mother, a mezzo-soprano, had taken voice lessons but never considered making a career as a professional singer. Sutherland was 18 years old when she began seriously studying voice with John and Aida Dickens. She made her concert debut in Sydney, as Dido in Purcell's Dido and Aeneas, in 1947. In 1951, she made her stage debut in Eugene Goossens's Judith. In 1951, after winning Australia's most important competition, the Sun Aria, now known as the Sydney Eisteddfod McDonald's Operatic Aria in 1949. She then went to London to further her studies at the Opera School of the Royal College of Music with Clive Carey. She was engaged by the Royal Opera House, Covent Garden, as a utility soprano, and made her debut there on 28 October 1952, as the First Lady in The Magic Flute, followed in November by a few performances as Clotilde in Vincenzo Bellini's Norma, with Maria Callas as Norma.

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.

Sherrill Milnes (born January 10, 1935) is an American operatic baritone most famous for his Verdi roles. From 1965 until 1997 he was associated with the Metropolitan Opera.

His voice is a high dramatic baritone, combining good legato with an incisive rhythmic style; furthermore, he has a commanding and handsome stage presence. By 1965 he had made his debut at the Metropolitan Opera. His international debuts followed soon thereafter, and Milnes became one of the world's prominent Verdi baritones of the 1970s and 1980s.

He has been a prolific recording artist, often in partnership with Plácido Domingo and Luciano Pavarotti.

Milnes was born in Downers Grove, Illinois to a dairy farmer and his wife. As a child, he exhibited strong and varied musical talents. In addition to singing, he also played piano, violin, viola, double bass, clarinet, and tuba. Although his interests did not always lean toward opera, he spent many hours singing to his father's cows and was once found on a tractor practicing an operatic laugh.