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 concerto transcriptions of Johann Sebastian Bach date from his second period at the court in Weimar. Bach transcribed for organ and harpsichord a number of Italian and Italianate concertos, mainly
L'estro armonico
…concerto Op. 3, No. 5, RV 519, is the unique concerto to have resulted in so many transcriptions: these are described in detail in Talbot (2010). The concerto transcriptions by Bach were probably made in Weimar where he was employed as court organist and later concertmaster in the period 1708–1717. It is thought likely that…
The court chapel or Himmelsburg at the Schloss in Weimar. The organ, at the top of the picture, was overhauled by J. K. Weisshaupt in 1707–1708, shortly before Bach's arrival, with further improvements by H. N. Trebs in June 1712–May 1714.
View of Weimar, 1686: the Wilhelmsburg is in the centre, with the Stadtkirche behind. The 3-storey Rotes Schloss is over the footbridge on the far left.
Instruments in the Bachhaus Eisenach. In the foreground is a copy of a 1705 harpsichord of the type Bach would have played in Weimar. In the background is a 1650 chamber organ from Kleinschwabhausen near Weimar.
Georg Philipp Telemann, engraving by Valentin Daniel Preisler