This is a complex, avant-garde work that utilizes a wide range of articulation techniques to reflect the various terms for laughter in its title. The texture is extremely dense and rhythmically volatile, moving through various 'laughing' textures.
At Henle 7 this is a late-advanced work — the technical demands are serious and sustained. The main demands: fast passage work that stays light and even at tempo; repeated-note passages that require controlled, springy fingerwork; and sharp dynamic and character contrasts held together in one arc.
Beyond that, expect precise articulation — the difference between crisp and blurred is the piece.
Executing the rapidly repeating notes and wide-ranging leaps with clean articulation demands significant physical agility.
Comparable difficulty and character — good candidates for what to learn next.
A level or two down with the same spirit — ideal if this piece is still out of reach.
Where this piece's skills lead: slightly harder works making similar technical demands.
Lesser-known works by the same hand, at a comparable level.
Chortle, cackle, cachinnate, guffaw, roar, giggle, snicker, snigger, titter is rated Henle level 7 of 9 — late advanced repertoire, roughly ABRSM grade 8 and above.
You should be comfortable at Henle level 7 — meaning you can already play level 6–7 pieces cleanly. Learning it one level early is possible as a stretch piece, but more than that usually leads to months of frustration.
A typical performance of Chortle, cackle, cachinnate, guffaw, roar, giggle, snicker, snigger, titter lasts about 5 minutes.
Chortle, cackle, cachinnate, guffaw, roar, giggle, snicker, snigger, titter is available as free public-domain sheet music on IMSLP — the score is linked directly from this page.
Pieces at a comparable difficulty and character include '...and keep the clay wet' by Nikolaos-Laonikos Psimikakis-Chalkokondylis, 11 Transformations on Alkan by Nikolaos-Laonikos Psimikakis-Chalkokondylis, Ballade and Scherzetto by Robert Volkmann — see the full similar-pieces list on this page.