The King's Breakfast
^^^ the film mentioned by GerryM
',,,hyperactive 28-minute slapstick, ballet and mime featurette that was deemed impressive enough to be invited for screening at the 1963 Cannes Film Festival.'
There's music but the poem is spoken.
https://youtu.be/bHtlOm4_lHk
director and choreographer : Wendy Toye 
set-designer : Ronald Searle
composer : Ron Grainer 
cast
Maurice Denham
Mischa Auer
Robert Flemyng
Reginald Beckwith
Warren Mitchell
Lally Bowers
Maryon Lane
Beryl Kaye
Una Stubbs
Caroline John
Jean Telfer
Leo Britt
Tony Bateman
Richard Pearson
Richard Hearne
Julian Orchard
Jeremy Lloyd
Bart Allison
https://en.m.wikipedia.org/wiki/The_King's_Breakfast_(film)