12 Ricercari is Alessandro Poglietti's famous polyphonic work. For first seven Ricercars, I used "Collectaneorum Musicorum" Libro II by Jan Dismas Zelenka.
No.1 is Stretta Fugue with augmented Theme.
bar1-13 : First Exposition with a sub Theme.
bar13-33 : Second Exposition.
bar34-45 : Augmented theme with another sub Theme.
bar46-65 : Stretta. Ordinary & Augmented Theme.