And she answered: "I will recite the last play he wrote from first to last—Alkestis—his strangest, saddest, sweetest song."
It is not, as was the case with Alkestis worked into the body of the poem; not welded, but inserted.
His allegiance to this vow is an act, and it shall be for Alkestis the test of his entire loyalty.
He meets and conquers Death and brings back Alkestis alive to her husband.
Then there is the crux of the play—Alkestis is to die for Admetos, and does it.