By it's title and it's twelve violin concertos, Vivaldi's L'estro armonico immediately captures the imagination. Rinaldo Alessandrini and his Concerto Italiano, with the addition of high-calibre keyboardists, present the full collection with the six additional adaptations for keyboard by Bach. This Opus 3 published by Vivaldi in 1711 vibrates with the virtues of a poetic energy taken to the highest level of expressivity, embodied in the subtle and virtuosic exchanges between a string orchestra and four, two, then one solo violins. The stylistic principles developed in each piece were completely new and inspired for the time, the virtuosity intense, and the success considerable, rapidly reaching beyond the frontiers of La Serenissima. Which is how Bach, seven years younger than Vivaldi and drawn to the polyphonic dimension of these "multi-voiced" pieces, adapted several of them for organ and harpsichord.