The part of Sant'Alessio lies extremely high and was meant to be sung by a castrato. The accompanying orchestra is up-to-date, dispensing with the archaic viols and using violins, cellos, harps, lutes, theorbos, and harpsichords.
The part of Sant'Alessio is situated at a high elevation and was intended to be sung by a castrato. The accompanying orchestra is contemporary, replacing the archaic viols with violins, cellos, harps, lutes, theorbos, and harpsichords.