Mambo musician / Benigni body-double ?

Cabiria and the movie star (Alberto) dance to a band
led by a man who yells, "Mambo!" and who bears a
striking resemblance to Italian director Roberto Benigni.

Could he have been Benigni's father or uncle ?
I don't believe that the character is listed
in the IMDB credits.

Anyone know ?

Thanks.