Henry Purcell in the context of "Music of Italy"

Baroque music (UK: /bəˈrɒk/ or US: /bəˈroʊk/) refers to the period or dominant style of Western classical music composed from about 1600 to 1750. The Baroque style followed the Renaissance period, and was followed in turn by the Classical period after a short transition (the galant style). The Baroque period is divided into three major phases: early, middle, and late. Overlapping in time, they are conventionally dated from 1580 to 1650, from 1630 to 1700, and from 1680 to 1750. Baroque music forms a major portion of the "classical music" canon, and continues to be widely studied, performed, and listened to. The term "baroque" comes from the Portuguese word barroco, meaning "misshapen pearl". Key composers of the Baroque era include Johann Sebastian Bach, George Frideric Handel, Henry Purcell, Antonio Vivaldi, Georg Philipp Telemann, Domenico Scarlatti, Claudio Monteverdi, Girolamo Frescobaldi, Alessandro Scarlatti, Jean-Baptiste Lully, Jean-Philippe Rameau, Arcangelo Corelli, François Couperin, Heinrich Schütz, Dieterich Buxtehude, and Heinrich Ignaz Franz Biber.

The Baroque saw the formalization of common-practice tonality, an approach to writing music in which a song or piece is written in a particular key; this type of harmony has continued to be used extensively in Western classical and popular music. During the Baroque era, professional musicians were expected to be accomplished improvisers of both solo melodic lines and accompaniment parts. Baroque concerts were typically accompanied by a basso continuo group (comprising chord-playing instrumentalists such as harpsichordists and lute players improvising chords from a figured bass part) while a group of bass instruments—viol, cello, double bass—played the bassline. A characteristic Baroque form was the dance suite. While the pieces in a dance suite were inspired by actual dance music, dance suites were designed purely for listening, not for accompanying dancers.

Diatonic and chromatic are terms in music theory that are used to characterize scales. The terms are also applied to musical instruments, intervals, chords, notes, musical styles, and kinds of harmony. They are very often used as a pair, especially when applied to contrasting features of the common practice music of the period 1600–1900.

These terms may mean different things in different contexts. Very often, diatonic refers to musical elements derived from the modes and transpositions of the "white note scale" C–D–E–F–G–A–B. In some usages it includes all forms of heptatonic scale that are in common use in Western music (the major, and all forms of the minor).

Girolamo Alessandro Frescobaldi (Italian: [dʒiˈrɔːlamo freskoˈbaldi]; also Gerolamo, Girolimo, and Geronimo Alissandro; September 1583 – 1 March 1643) was an Italian composer and virtuoso keyboard player. Born in the Duchy of Ferrara, he was one of the most important composers of keyboard music in the late Renaissance and early Baroque periods. A child prodigy, Frescobaldi studied under Luzzasco Luzzaschi in Ferrara, but was influenced by many composers, including Ascanio Mayone, Giovanni Maria Trabaci, and Claudio Merulo. Girolamo Frescobaldi was appointed organist of St. Peter's Basilica, a focal point of power for the Cappella Giulia (a musical organisation), from 21 July 1608 until 1628 and again from 1634 until his death.

Frescobaldi's printed collections contain some of the most influential music of the 17th century. His work influenced Johann Jakob Froberger, Johann Sebastian Bach, Henry Purcell, and other major composers. Pieces from his celebrated collection of liturgical organ music, Fiori musicali (1635), were used as models of strict counterpoint as late as the 19th century.

Figured bass is musical notation in which numerals and symbols appear above or below (or next to) a bass note. The numerals and symbols (often accidentals) indicate intervals, chords, and non-chord tones that a musician playing piano, harpsichord, organ, or lute (or other instruments capable of playing chords) should play in relation to the bass note. Figured bass is closely associated with basso continuo: a historically improvised accompaniment used in almost all genres of music in the Baroque period of Classical music (c. 1600–1750), though rarely in modern music. Figured bass is also known as thoroughbass.

Other systems for denoting or representing chords include plain staff notation, used in classical music; Roman numerals, commonly used in harmonic analysis; chord letters, sometimes used in modern musicology; the Nashville Number System; and various chord names and symbols used in jazz and popular music (e.g., C Major or simply C; D minor, Dm, or D−; G, etc.).

Thomas Linley the younger (7 May 1756 – 5 August 1778), also known as Thomas Linley, Junior or Tom Linley, was the eldest son of the composer Thomas Linley and his wife Mary Johnson. He was one of the most precocious composers and performers that have been known in England. A highly talented violinist, Tom Linley was also the most promising of all native English composers between Henry Purcell and Edward Elgar, combining prodigious talent with a delightful personality. He is sometimes referred to as the "English Mozart". His early promise was cut short when he drowned in a boating accident, aged just 22 years.

Dido's Lament ("When I am laid in earth") is the closing aria from the opera Dido and Aeneas by Henry Purcell to a libretto by Nahum Tate.

It is included in many classical music textbooks to illustrate the descending chromatic fourth (passus duriusculus) in the ground bass. The conductor Leopold Stokowski wrote a transcription of the piece for symphony orchestra. This is played annually in London by the massed bands of the Guards Division at the Cenotaph remembrance parade in Whitehall on Remembrance Sunday, the Sunday nearest to 11 November (Armistice Day).

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. Both works use the prologue/three acts format and there are similarities between, for instance, Mercury's solo in Didone and the solo "Come away fellow sailors" in Purcell's work.