Question: What occupation are Henry Purcell and Gaspare Spontini are both well known in?

Context paragraphs:
Dido and Aeneas: Dido and Aeneas (Z. 626) is an opera in a prologue and three acts, written by the English Baroque composer Henry Purcell with a libretto by Nahum Tate.  The dates of the composition and first performance of the opera are uncertain.  It was composed no later than July 1688, and had been performed at Josias Priest's girls' school in London by the end of 1689.  Some scholars argue for a date of composition as early as 1683.  The story is based on Book IV of Virgil's "Aeneid".  It recounts the love of Dido, Queen of Carthage, for the Trojan hero Aeneas, and her despair when he abandons her.  A monumental work in Baroque opera, "Dido and Aeneas" is remembered as one of Purcell's foremost theatrical works.  It was also Purcell's only true opera, as well as his only all-sung dramatic work.  One of the earliest known English operas, it owes much to John Blow's "Venus and Adonis", both in structure and in overall effect.  The influence of Cavalli's opera "Didone" is also apparent.

Henry Purcell: Henry Purcell ( or ; c. 10 September 1659 – 21 November 1695) was an English composer.  Although incorporating Italian and French stylistic elements into his compositions, Purcell's legacy was a uniquely English form of Baroque music.  He is generally considered to be one of the greatest English composers; no other native-born English composer approached his fame until Edward Elgar, Ralph Vaughan Williams, William Walton and Benjamin Britten in the 20th century.

Henry Cooke (composer): Henry Cooke (c. 1616 – 13 July 1672) commonly known as Captain Cooke, was an English composer, choirmaster and singer.  He was a boy chorister in the Chapel Royal and by the outbreak of the English Civil War was a Gentleman of the Chapel Royal.  He joined the Royalist cause, in the service of which he rose to the rank of Captain.  With the Restoration of Charles II he returned to the Chapel Royal as Master of the Children and was responsible for the rebuilding of the Chapel and the introduction of instrumental music into the services.  The choristers in his charge included his successor and eventual son-in-law Pelham Humfrey, as well as Henry Purcell and John Blow.

Purcell–Killingsworth House: The Purcell–Killingsworth House, now the Garden Path Inn bed & breakfast, is a historic residence in Columbia, Alabama.  Also known as Traveler's Rest, it was completed in 1890 by William Henry Purcell (1845-1910), a prominent Columbia businessman and politician.  Purcell's business interests included a steamboat landing on the Chattahoochee River.  The bed and breakfast has three guestrooms.

Ode to St. Cecilia (Purcell): Hail!  Bright Cecilia (Z.328), also known as Ode to St. Cecilia, was composed by Henry Purcell to a text by the Irishman Nicholas Brady in 1692 in honour of the feast day of Saint Cecilia, patron saint of musicians.  Annual celebrations of this saint's feast day (22 November) began in 1683, organised by the Musical Society of London, a group of musicians and music lovers.  Purcell had already written Cecilian pieces in previous years, but this Ode remains the best known.  The first performance was a great success, and received an encore.

Purcell Society: The Purcell Society, founded in 1876 (principally by William Hayman Cummings) is an organization dedicated to making the complete musical works of Henry Purcell available.  Between 1876 and 1965, scores of all the known works of Purcell were published, in 32 volumes.  Advances in musical scholarship and editorial techniques in the decades after the first volumes were issued meant that by the second half of the 20th century they were no longer meeting the needs of users.  Beginning in the 1960s, the Purcell Society began to issue revised versions of the scores.  The website gives details of the scores in the revised series that are currently available.

Anthony Lewis (musician): Sir Anthony Carey Lewis KBE (2 March 1915 – 5 June 1983), also known as Sir Carey Lewis, was an English conductor, composer, editor, and music educator.  He is best known for co-founding and serving as the first chief editor of "Musica Britannica".  He also penned several critical editions of operas by George Frideric Handel and of Henry Purcell's "The Fairy Queen", and served for many years as honorary secretary of the Purcell Society.  As a conductor he played a role in the baroque music revival of the mid 20th century by leading performances of several Handel opera revivals.  He was named a Knight Commander of the Order of the British Empire in 1972.

Franklin B. Zimmerman: Franklin Bershir Zimmerman (born June 20, 1923) is an American musicologist and conductor who has published extensively in the field of Baroque music, and particularly on the English composer, Henry Purcell.  He is most known for his complete catalogue of Purcell's works, considered "one of the most crucial contributions to Purcell research".  Each work in the catalogue is given a "Z number" which derives from Zimmerman's surname.

Symphony song: The English Symphony song was a musical genre of baroque music best known in the compositions of Henry Purcell and his contemporaries including his teacher John Blow.  In the symphony song voices and continuo were enriched with ritornelli for violins or a pair of recorders. Among the earliest symphony songs are four published by Oxford composer Henry Bowman in 1677.  John Blow's most notable early example is "Awake, awake my lyre".  The symphony song was a genre mainly linked to the Restoration royal court, just as the symphony anthem was linked to the English Chapel Royal.  Purcell's symphony songs were probably written for performance by members of the Private Music in the royal apartments.

Gaspare Spontini: Gaspare Luigi Pacifico Spontini (14 November 177424 January 1851) was an Italian opera composer and conductor.

Supporting paragraphs: Henry Purcell Gaspare Spontini
Answer: composer