The sound vibration of the Hare Krishna mantra, although presented in the ordinary alphabet, should not be taken as mundane or material.
Srimad bhagavatam 4.9.4,
Material world brings pleasure and miseries.
Everything in Material world is temporary.
Do not take this material world so seriously because it is always changing, what you take seriously is being some thing terrible today. Tomorrow it's Going to Change.
Everything is resting on Krishna, and everything is Krishna, but this is not to be realized by persons on the material platform.
Srimad Bhagavatam 10.10.32,
There are so many dangers in life because the material world is a place of danger.