the equivalent of Opera, PNG Style

the singing and chanting and dancing and costumes (called bilas) are as impressive as you would find in any western style opera.
What a pity (pity???) were the superpower to bomb off the planet such diversity of humanity as respresented not only here but in Iraq, Iran, Afghanistan, North Korea.
Why don't they stop being such bullies and sit back and enjoy the contribution to our common humanity that is made by other cultures?