 Things liven up as the most famous number in the opera, the "Galop infernal", begins, and all present throw themselves into it with wild abandon ("Ce bal est original").Ominous violin music heralds the approach of Orphée (Entrance of Orphée and Public Opinion), but Jupiter has a plan, and promises to keep Eurydice away from her husband.As with the standard myth, Orphée must not look back, or he will lose Eurydice forever ("Ne regarde pas en arrière!