He was also a composer, and a performer, organizing and playing in a mandolin quartet in France.
[1] At the time that he was teaching in France and at the school, the mandolin was regaining popularity.
Mezzacapo "became the most important exponent of his time," through his performing and organizing and teaching.
He also directed the Casino of Cannes orchestra, in the lounge of the Grand Duke of Mecklenburg.
His work led him to be given credit for adding to the mandolin's successful rise as an orchestral instrument.