 The Spanish composer Benet Casablancas wrote "Alter Klang", Impromptu for Orchestra after Klee (2006); Casablancas is author also of the "Retablo on texts by Paul Klee", Cantata da Camera for Soprano, Mezzo and Piano (2007).In 1950, Giselher Klebe performed his orchestral work "Die Zwitschermaschine" with the subtitle "Metamorphosen über das Bild von Paul Klee" at the Donaueschinger Musiktage.