- Cast:
- Porsenna (T)
- Clelia (S)
- Orazio (MS, castrato)
- Larissa (S)
- Tarquinio (S, castrato)
- Mannio (S)
- Mixed Chorus (SATB)
- Orchestra:
- 2 trumpets, 2 horns, 2 english horns, 2 flutes, 2 oboes, 2 bassoons,
timpani, strings, continuo (cellos, basses, harpsichord, bassoon)
- 2 trumpets, 2 horns, 2 english horns, 2 flutes, 2 oboes, 2 bassoons,