Final answer:
The 6th choral ode explores Orphic and Orphic-related themes, as well as the concept of descent into the underworld.
Step-by-step explanation:
The 6th choral ode in ancient Greek tragedy is about various topics such as Orphism, Orphic-related themes, and the descent into the underworld. It is a complex and multifaceted ode, and a detailed analysis of its lines can reveal more about these subjects. However, its specific content will depend on the context of the play or poem in which it appears.