Roberto was 2nd conductur at the Theatre of Lübeck from 1976 to 1981.
He performed ballet, opera and concerts as well as the first performance of a chamber opera. He was guest conductor at the theatres of Flensburg, Hildesheim (Rigoletto) and Coburg.
The difficult situation of German Theatres at that time forced him to study pharmacy. Roberto remained chief conductor of the Youth Symphony orchestra - an institution of the Theatre and some high schools - which he took over in 1978.