Born in
Naples, Musella studied at the Naples Academy of Dramatic Art and the Paolo Grassi Civic School in Milan. Mainly active in theater, in 2009 he formed the Musella-Mazzarelli stage company together with
Paolo Mazzarelli. In 2013, he made his film debut in
Happy Days Motel, and in 2015 he had his breakout with the role of Rosario 'o Nano Ercolano in the crime series
Gomorrah. In 2021, he was nominated for a
David di Donatello award in the
Best Supporting Actor category for his performance in the
Damiano and Fabio D'Innocenzo's film
Bad Tales. == Filmography ==