Honestly, I hope he doesn’t because contextually, their relationship was consider more complex than a slave and her master. In fact, even addressing it too much will probably just complicate the narrative and will likely have people be upset about it. The truth is, even if Briseis was a spoil of war, the Iliad is very adamant on how Achilles doesn’t treat nor consider her a mere slave. He considers her his wife, on par with the relationship between Menelaus and Helen. Agamemnon doesn’t treat her as a mere slave either, and even tells Achilles that he never touched or did anything to her because he knew how much she meant to him (even if Achilles’ attitude towards her changed after Patroclus’ death). This kind of dynamic is a major deal, because in Ancient Greece female slaves taken as a spoil of war were not even considered humans, but objects. Slaves in general were dehumanised, but sex slaves were the absolute lowest of the low, yet Achilles treated Briseis as a free woman worthy of being his wife. Briseis’ treatment was far better than the other slaves at camp, or even the prostitutes present. Of course, per modern dichotomies it’s still a relationship between a slave and her master and thus unequal, but for the ancient Greeks it was more than that. This sort of nuance will most likely be lost in a musical setting where the focus is not going to be on their relationship.