Floriana Frassetto is the daughter of Italian emigrants to the States (Norfolk, Virginia), she studied at Alessandro Fersen's Theatre Academia in Rome from 1967 to 1969. She completed her training as actress attending a comprehensive course (mime, acrobatics, dance) at Roy Bosier's Teatro Studio. Between 1969 and November 1970, she worked in Rome in several pantomime and theatre productions. The idea of founding MUMMENSCHANZ resulted from meeting, in 1972, Andres Bossard and Bernie Schürch ... two young Swiss clowns called Before and Lost.

She has since co-invented the repertoire of MUMMENSCHANZ and played in each performance. The creation of costumes, the choreography of Giancarlo Sbragia "Faust" played in the Roman amphitheatre of Taormina (Sicily), the staging of some MUMMENSCHANZ scenes for André Heller's musical Body and Soul, the artistic collaboration with Isabelle Baudet for the children musical Oliver Twist in Lausanne (Switzerland) all rank among her best individual achievements.