The opening movement presents a choir of deities giving homage to the young Hercules, with "lullaby-like" chordal instrumental accompaniment. In the first recitative, Hercules establishes the "crossroads" at which he finds himself: a choice between the right path and following his desires. Lust responds with a lullaby-like aria to lure Hercules. The duet recitative "encapsulates the age-old good angel/bad angel, good cop/bad cop dichotomy", leading into an aria in which Hercules is "vacillating between them". The aria adopts the "echo" form prominent in early Italian opera: another alto voice engages in imitative exchanges with Hercules and with the instrumental lines. Virtue proceeds with a secco recitative and "ebullient" aria entreating Hercules to follow the right path that he might "soar on his wings like an eagle to the stars". Virtue concludes with another secco recitative warning Hercules not to succumb to Lust's temptations. Hercules sings a da capo aria expressing his conviction to follow Virtue's advice. The accompanying instrumental lines represent the "writhing of serpents ... being torn apart" by his choice. He then sings a duet recitative with Virtue: "metaphorically she 'weds' herself to him and they end together with a vow of unity". This moves into a long duet aria "with all the quiet tranquility of a love song but, perhaps, one that commits minds and emotions rather than bodies". The character of Mercury appears for the first time in the penultimate movement, accompanied by a "haze of God-like mysticism" created by the strings. The closing chorus is combined with a bass arioso in which Mercury addresses the Crown Prince directly. The movement is stylistically a gavotte with a balanced structure contrasting orchestra and chorus with the bass solo.
