L'estro armonico, Op. 3, is a set of 12 concertos for string instruments by Italian composer Antonio Vivaldi, first published in Amsterdam in 1711. Vivaldi scholar Michael Talbot described the set as
Title page of the first edition
Santa Maria della Pietà, Venice, the church built on the site of the Ospedale della Pietà
Probable portrait of Vivaldi, c. 1723
John Parry arranged the third and fifth concertos for harp
The Four Seasons is a group of four violin concerti by Italian composer Antonio Vivaldi, each of which gives musical expression to a season of the year. These were composed around 1718–1723, when Viva
Antonio Vivaldi (engraving by François Morellon de La Cave, from Michel-Charles Le Cène's edition of Vivaldi's Op. 8, 1725)
Title page of Vivaldi's Cimento dell'Armonia e dell'Invenzione, which included The Four Seasons
Bernardino Molinari, who made the first electrical recording of The Four Seasons in 1942.