Well you pick a theme, for example never giving up. (theme is up to you) and then you pick a song that goes with the theme, a good example for this theme is songs like Titanium by Sia etc..
Answer:
The big three gods are Zues, Hades, and Posideon. Athena. Ares. Atermis. Hades. Persophone. and hades
Explanation:
The big three are the most powerful gods so its those. In Rick Rodans books all of these are called those.