Question: Suvini Zerboni was the agent of which prolific german composer violist, violinist, teacher and conductor ?
Sentence (from "Suvini Zerboni"): The ESZ catalogue included, besides operetta favourites, the best of Italian contemporary music, such composers as Goffredo Petrassi, Luigi Dallapiccola, Luciano Berio, Ildebrando Pizzetti, and Gian Francesco Malipiero.
Relevant evidence: No