Cuore matto... matto da legare (Italian for Mad heart... mad as a hatter) is a 1967 Italian "musicarello" film directed by Mario Amendola.

[1][2][3][4] Tony, a young singer who has returned to Rome from the United States, meets Carla at the airport, a beautiful architecture student he falls in love with.

The boy, who wants to continue the musical activity, forms a band with two friends, Marco and Sandro, also managing to perform live and get noticed by a Rai official: his parents, however, who are against these choices and they would prefer to see their son working in their butcher shop, they try to arrange a marriage for him with a girl friend of the family, Cesira, to make him settle down.

While Tony is walking with Cesira trying to get rid of her, he is seen by Carla who, jealous, decides not to see him again: the intervention of the two friends Marco and Sandro, who suggest that he invent a twin brother, Pompeo, who would be been walking with Cesira in Tony's place, instead of being decisive it will complicate things.

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