cassation
/kəˈseɪʃ(ə)n
/noun Music
An informal instrumental composition of the 18th century, similar to a divertimento and often performed outdoors.A cassation is akin to a divertimento; Mozart composed a few early in his career, but it is a relatively unusual genre.
Origin
Late 19th century: from German Kassation 'serenade', from Italian cassazione.