If two Italians must be credited to make of this a true art form worldwide (Leopoldo Fregoli in last century, pictured below, and Arturo Brachetti those days), other singular variations have been around.
One of those was Gerard Sety from France. Mr.Sety, who left this world in 1998, was a French movie actor whose dozens of popular film appearances are credited. But his non-screen identity was tied to an umbelievable cabaret stage act in which he completely revolved the concept of quick-change: in fact it is proper to classify it as a slow-change performer. His 10-minute piece, performed in any language, became in the crescendo an hallucynant masterpiece of pure dadaism.
We had somewhere a version of the act in his integrity, likely the last time in his life he performed it in TV. Even if in Italian language, we are sure that is perfectly enjoyable in his universal crazyness.
Ladies and gentleman, please admire the only and unique slow-change act in the history: Gerard Sety.