L'estro Armonico (The Harmonic Inspiration) is a group of twelve concertos for violin, or multiple violins, accompanied by various instrumentation. This is the 6th concerto in 'Libro primo' and the most well known. The most popular arrangement for violin and piano is by Tivadar Nachéz, a Hungarian violin player. He had also arranged it for violin with strings and Organ continuo. It is commonly performed on the viola as well in D minor.