L'estro armonico, Op. 3

L'estro armonico (The Harmonic Inspiration), Op. 3, is a set of 12 concertos for string instruments by Italian composer Antonio Vivaldi, first published in Amsterdam in 1711. Vivaldi's Twelve Trio Sonatas, Op. 1, and Twelve Violin Sonatas, Op. 2, only contained sonatas, thus L'estro armonico was his first collection of concertos appearing in print. It was also the first time he chose a foreign publisher, Estienne Roger, instead of an Italian. Each concerto was printed in eight parts: four violins, two violas, cello and continuo. The continuo part was printed as a figured bass for violone and harpsichord.