Vivaldi's concerti con molti stromenti are true precursors of the symphony in their amplitude and audacity. In these pieces, the 'Red-haired Priest', a creator of boundless imagination, amused himself by devising literally unheard-of combinations of timbres. In the famous concerto Il Mondo al rovescio (The world upside down), he invited flutes, oboes and harpsichord to double violin and cello in a colourfl whirlwind of parallel octaves. This recording by Amandine Beyer and Gli Incogniti provides an opportunity to discover these incredibly modern compositions.