A basso porto Wikipedia
A basso porto (At the Lower Harbor) is an opera in three acts by composer Niccola Spinelli. The opera uses an Italian language libretto by Eugene Checchi which is based on Goffredo Cognetti's 1889 play O voto. The opera premiered to critical success at the Cologne Opera on April 18, 1894, sung in a German translation by Ludwig Hartmann and Otto Hess. The work is widely considered Spinelli's greatest composition, and the prelude to the opera's third act has been programmed by numerous orchestras for performances in concert.