Title: Antonio Vivaldi
Content:   Antonio Lucio Vivaldi (, ;   ; 4 March 1678 – 28 July 1741) was an Italian Baroque composer, virtuoso violinist, teacher, impresario, and Roman Catholic priest. Born in Venice, the capital of the Venetian Republic, Vivaldi is regarded as one of the greatest Baroque composers. His influence during his lifetime was widespread across Europe, giving origin to many imitators and admirers and was paramount in the development of Johann Sebastian Bach's instrumental music and the French concerto (Michel Corrette, Jean-Joseph de Mondonville, Louis-Nicholas Clérambault). Vivaldi composed many instrumental concertos, for the violin and a variety of other musical instruments, as well as sacred choral works and more than fifty operas. His best-known work is a series of violin concertos known as the Four Seasons. Many of his compositions were written for the all-female music ensemble of the Ospedale 
Title: Antonio Vivaldi
Content:  Prince Ferdinand of Tuscany. The prince sponsored many musicians including Alessandro Scarlatti and George Frideric Handel. He was a musician himself, and Vivaldi probably met him in Venice. L'estro armonico was a resounding success all over Europe. It was followed in 1714 by La stravaganza (Opus 4), a collection of concerti for solo violin and strings, dedicated to an old violin student of Vivaldi's, the Venetian noble Vettor Dolfin. In February 1711, Vivaldi and his father traveled to Brescia, where his setting of the Stabat Mater (RV 621) was played as part of a religious festival. The work seems to 
Title: Antonio Vivaldi
Content:  A composition by Vivaldi is identified by RV number, which refers to its place in the "Ryom-Verzeichnis" or "Répertoire des oeuvres d'Antonio Vivaldi", a catalog created in the 20th century by the musicologist Peter Ryom. Le quattro stagioni (The Four Seasons) of 1723 is his most famous work. Part of Il cimento dell'armonia e dell'inventione ("The Contest between Harmony and Invention"), it depicts moods and scenes from each of the four seasons. This work has been described as an outstanding instance of pre-19th century program music. Vivaldi wrote more than 500 other concertos. About 350 of these are for solo instrument and strings, of which 230 are for violin, the others being for bassoon, cello, oboe, flute, viola d'amore, recorder, lute, or mandolin. About forty concertos are for two instruments and strings, and about thirty are for three or more instruments and strings. As well as about 46 operas, Vivaldi composed a large body of sacred choral music, such as the Magnificat RV 610. Other works include sinfonias, about 90 sonatas and chamber music. Some sonatas for flute, published as Il Pastor Fido, have been erroneously attributed to Vivaldi, but were composed by Nicolas Chédeville.
Title: History of Italian culture (1700s)
Content:  Antonio Vivaldi was the most important composer in Italy at the end of the Baroque period. He wrote more than 400 concertos for various instruments, especially for the violin. The scores of 21 operas, including his first and last, are still intact. His best known work is a series of violin concertos known as The Four Seasons. Johann Sebastian Bach was deeply influenced by Vivaldi's concertos and arias (recalled in his St John Passion, St Matthew Passion, and cantatas). Bach transcribed six of Vivaldi's concerti for solo keyboard, three for organ, and one for four harpsichords, strings, and basso continuo based upon the concerto for four violins, two violas, cello, and basso continuo.
Title: Antonio Vivaldi
Content:  Vivaldi's music was innovative. He brightened the formal and rhythmic structure of the concerto, in which he looked for harmonic contrasts and innovative melodies and themes. Many of his compositions are flamboyantly exuberant. The German scholar Walter Kolneder has discerned the influence of Legrenzi's style in Vivaldi's early liturgical work Laetatus sum (RV Anh 31), written in 1691 at the age of thirteen. Johann Sebastian Bach was deeply influenced by Vivaldi's concertos and arias (recalled in his St John Passion, St Matthew Passion, and cantatas). Bach transcribed six of Vivaldi's concerti for solo keyboard, three for organ, and one for four harpsichords, strings, and basso continuo (BWV 1065) based upon the concerto for four violins, two violas, cello, and basso continuo (RV 580).
Title: Antonio Vivaldi
Content:  In September 1703, Vivaldi (24) became maestro di violino (master of violin) at an orphanage called the Pio Ospedale della Pietà (Devout Hospital of Mercy) in Venice. While Vivaldi is most famous as a composer, he was regarded as an exceptional technical violinist as well. The German architect Johann Friedrich Armand von Uffenbach referred to Vivaldi as "the famous composer and violinist" and said that "Vivaldi played a solo accompaniment excellently, and at the conclusion he added a free fantasy [an improvised cadenza] which absolutely astounded me, for it is hardly possible that anyone has ever played, or ever will play, 
Title: Magnificat (Vivaldi)
Content:  Vivaldi worked in Venice as a priest and director of music at an orphanage for girls, Ospedale della Pietà, and left a substantial amount of sacred music. He composed settings of the Magnificat canticle, a regular part of vesper services. Musicologists differ in dating the works, for example before 1717 or in 1719. According to the musicologist Michael Talbot, Vivaldi wrote the earliest version in G minor for the orphanage c. 1715, and copied it for a Cistercian monastery of Osek soon afterwards. He revised it in the 1720s, making the tenor and bass parts more suitable to male voices, and adding two oboes, which he used prominently as obbligato instruments in an expanded version of "Sicut locutus est". This version became known as RV 610. While Vivaldi assigned two choirs, with instructions in the choral movements to use one or the other or both, it remains monochoral music. Vivaldi wrote a later setting, RV 611, which retained the choral sections but replaced the three sections for solo voices by five more elaborate arias, in which individual girls from the orphanage could show off their skills. Their names were noted in the score.
Title: Antonio Vivaldi
Content:  Ospedale's renowned orchestra and choir. Shortly after Vivaldi's appointment, the orphans began to gain appreciation and esteem abroad, too. Vivaldi wrote concertos, cantatas and sacred vocal music for them. These sacred works, which number over 60, are varied: they included solo motets and large-scale choral works for soloists, double chorus, and orchestra. In 1704, the position of teacher of viola all'inglese was added to his duties as violin instructor. The position of maestro di coro, which was at one time filled by Vivaldi, required a lot of time and work. He had to compose an oratorio or concerto at every 
Title: Antonio Vivaldi
Content:  presented in 1730; it garnered six revivals. Some of his later operas were created in collaboration with two of Italy's major writers of the time. Vivaldi was accompanied by his father and traveled to Vienna and Prague in 1730. L'Olimpiade and Catone in Utica were written by Pietro Metastasio, the major representative of the Arcadian movement and court poet in Vienna. La Griselda was rewritten by the young Carlo Goldoni from an earlier libretto by Apostolo Zeno. At the height of his career, Vivaldi received commissions from European nobility and royalty, some of them are:    Charles VI admired the music 
Title: Antonio Vivaldi
Content:  Pietà, a home for abandoned children. Vivaldi had worked as a Catholic priest for 18 months and was employed from 1703 to 1715 and from 1723 to 1740. Vivaldi also had some success with expensive stagings of his operas in Venice, Mantua and Vienna. After meeting the Emperor Charles VI, Vivaldi moved to Vienna, hoping for royal support. However, the Emperor died soon after Vivaldi's arrival, and Vivaldi himself died in poverty less than a year later. After almost two centuries of decline, Vivaldi's musical reputation underwent a revival in the early 20th century, with much scholarly research devoted to his work. Many of Vivaldi's compositions, once thought lost, have been rediscovered – in one case as recently as 2006. His music remains widely popular in the present day and is regularly played all over the world.

Question: what type of music did vivaldi compose?
Answer: Baroque music.