We now use the word nostalgia to mean a bittersweet memory of the past or, sometimes, a desire to go home. But the original Greek has a slightly different meaning. Nostos means, not ‘home’, but ‘the act of returning home’. And algos means ‘pain’. Thus, in its original form, nostalgia literally means ‘the pain of homecoming’. And that strange emotion is at the very heart of this bleak but intelligent production of Monteverdi’s late opera, Il Ritorno d’Ulisse in Patria, rendered here in an excellent English translation by Christopher Cowell. While I think that Ulisse is, overall, my least favourite musically of Monteverdi’s operas, this stripped-back production proves that it’s capable of packing a powerful emotional punch.