The music of the opera by Claudio Monteverdi was accompanied with basso continuo and a soloist who would perform a recitative speech. The overall structure was thoroughly filled with chordal numbers, ritornelli and dances that were new to people and nonexistent in the period of 1600s. Some of the aristocratic instruments including lutes and harpsichords were also used for those scenes that involved Gods and Godly events. On the other hand, the Infernal Orchestra in this performance made use of regal. The instruments were chosen depending on the events involved.
With a strong timbre, the orchestra comprised of violins, harpsichords, double harp, pochettes, chitarroni, bass viols, pipe organs, sackbuts, cornets, trumpets, regal and descant recorders. Most of them have already become extinct today. However, the rhythms in this performance had innumerable variations depending on the scene. The form of the opera varied in third act when Monteverdi attempted to arrange in chiastic structure as in this case, Orfeo decides to convince Charon. It is a long journey to achieve the desire.