The Collaborative International Dictionary
Improvisator
Improvisator \Im*prov"i*sa`tor\, n. An improviser, or improvvisatore.
Wiktionary
improvisator
n. 1 One who improvises. 2 An improvvisatore.
Usage examples of "improvisator".
They were improvisators, and made up their ballads off-hand, with the quick, attentive chorus of the dancers joining in.