Studies followed at the Vienna Academy of Music in composition with Erich Urbanner and conducting with Karl Österreicher, he received diplomas with distinction.
Mancusi was artistic director of the Operklosterneuburg festival and since 1998 he has been chief conductor of the Schloss Schönbrunn Orchester Vienna [de] with a focus on classical music.
He was a juror at the "concorso internazionale di canto: Riccardo Zandonai", the world premiere of the oratorio Mother Earth at the Wiener Musikverein and the "National Children's Music Competition" on ORF.
Mancusi also conducted the People's Opera Orchestra in the ballets Carmen, Le Concours, Carmina Burana/Prélude à l'après-midi d'un faune/Boléro and Cendrillon.
[3] In addition to his work as an opera conductor, he is a professor at the Musik und Kunst Privatuniversität der Stadt Wien.