Henry Purcell 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, and Benjamin Britten in the 20th century.

Purcell was born in St Ann's Lane, Old Pye Street Westminster – the area of London later known as Devil's Acre – in 1659. Henry Purcell Senior, whose older brother Thomas Purcell (d. 1682) was also a musician, was a gentleman of the Chapel Royal and sang at the coronation of King Charles II of England. Henry the elder had three sons: Edward, Henry and Daniel. Daniel Purcell (d. 1717), the youngest of the brothers, was also a prolific composer who wrote the music for much of the final act of The Indian Queen after Henry Purcell's death. Henry Purcell's family lived just a few hundred yards west of Westminster Abbey from 1659 onwards.

After his father's death in 1664, Purcell was placed under the guardianship of his uncle Thomas who showed him great affection and kindness. Thomas was himself a gentleman of His Majesty's Chapel, and arranged for Henry to be admitted as a chorister. Henry studied first under Captain Henry Cooke (d. 1672), Master of the Children, and afterwards under Pelham Humfrey (d. 1674), Cooke's successor. Henry was a chorister in the Chapel Royal until his voice broke in 1673, when he became assistant to the organ-builder John Hingston, who held the post of keeper of wind instruments to the King.

The earliest work that can be certainly identified as his is an ode for the King's birthday, written in 1670. (The dates for his compositions are often uncertain) It is assumed that the three-part song Sweet tyranness, I now resign was written by him as a child.

In 1679, Blow, who had been appointed organist of Westminster Abbey in 1669, resigned his office in favour of his pupil. Purcell now devoted himself almost entirely to the composition of sacred music, and for six years severed his connection with the theatre. However, during the early part of the year, probably before taking up his new office, he had produced two important works for the stage, the music for Nathaniel Lee's Theodosius, and Thomas d'Urfey's Virtuous Wife. Between 1680 and 1688 Purcell wrote music for seven plays. The composition of his chamber opera Dido and Aeneas, which forms a very important landmark in the history of English dramatic music, has been attributed to this period, and its earliest production may well have predated the documented one of 1689. It was written to a libretto furnished by Nahum Tate, and performed in 1689 in cooperation with Josias Priest, a dancing master and the choreographer for the Dorset Garden Theatre. Priest's wife kept a boarding school for young gentlewomen, first in Leicester Fields and afterwards at Chelsea, where the opera was performed. At the time, Dido and Aeneas never found its way to the theatre, though it appears to have been very popular in private circles. It is believed to have been extensively copied, but only one song was printed by Purcell's widow in Orpheus Britannicus, and the complete work remained in manuscript until 1840, when it was printed by the Musical Antiquarian Society under the editorship of Sir George Macfarren. The composition of Dido and Aeneas gave Purcell his first chance to write a sustained musical setting of a dramatic text. It was his only opportunity to compose a work in which the music carried the entire drama. 

Soon after Purcell's marriage, in 1682, on the death of Edward Lowe, he was appointed organist of the Chapel Royal, an office which he was able to hold simultaneously with his position at Westminster Abbey. His eldest son was born in this same year, but he was short-lived. His first printed composition, Twelve Sonatas, was published in 1683. For some years after this, he was busy in the production of sacred music, odes addressed to the king and royal family, and other similar works. In 1685, he wrote two of his finest anthems, I was glad and My heart is inditing, for the coronation of King James II. In 1690 he composed a setting of the birthday ode for Queen Mary, Arise, my muse and four years later wrote one of his most elaborate, important and magnificent works – a setting for another birthday ode for the Queen, written by Nahum Tate, entitled Come Ye Sons of Art.

Purcell's Te Deum and Jubilate Deo were written for Saint Cecilia's Day, 1694, the first English Te Deum ever composed with orchestral accompaniment. This work was annually performed at St Paul's Cathedral until 1712, after which it was performed alternately with Handel's Utrecht Te Deum and Jubilate until 1743, when both works were replaced by Handel's Dettingen Te Deum.

He composed an anthem and two elegies for Queen Mary II's funeral. Besides the operas and semi-operas already mentioned, Purcell wrote the music and songs for Thomas d'Urfey's The Comical History of Don Quixote, Bonduca, The Indian Queen and others, a vast quantity of sacred music, and numerous odes, cantatas, and other miscellaneous pieces. In 1693, Purcell composed music for two comedies: The Old Bachelor, and The Double Dealer. Purcell also composed for five other plays within the same year. In the final six years of his life, Purcell wrote music for forty-two plays.

Purcell died in 1695 at his home in Marsham Street, at the height of his career. He is believed to have been 35 or 36 years old at the time. The cause of his death is unclear: one theory is that he caught a chill after returning home late from the theatre one night to find that his wife had locked him out. Another is that he succumbed to tuberculosis.